The Ultimate Category Management Glossary: 106 Retail Buying Terms Explained
Every industry has its own language. Category management is no exception, and most of that language gets thrown around in meetings, supplier calls, and LinkedIn posts without anyone stopping to explain it properly.
This category management glossary fixes that. Over a hundred terms, plain English, grouped so you can find what you need fast. Whether you’re an independent retailer trying to read a supplier scorecard, a supplier preparing for a category review, or a self-published author trying to sound retail ready in front of a buyer, this is the shared language you need.
Bookmark this one. You’ll be back.
Buying and Range: Planning
Range: the total set of products a retailer stocks in a category. Your range is your offer to the customer.
Range Architecture: how a range is structured by role and tier, for example good/better/best or hero/core/tail. Gives every SKU a clear job to do.
Assortment Planning: deciding which SKUs to stock, in what depth, and for which stores or channels. Get this wrong and you’re either out of stock on winners or drowning in slow sellers.
Range Review: a periodic, structured assessment of every SKU in a category against sales, margin, and stock performance. If you’ve never run one, that’s usually the first thing worth fixing. Our retail category management services are built around exactly this.
Core Range: the must-stock SKUs that drive the bulk of category sales. Protect these first.
Long Tail: the large number of low-volume SKUs that add range depth but contribute little volume. Useful in small doses. Dangerous in large ones.
Buying Cycle: the repeating sequence of planning, ordering, receiving, and reviewing stock. Every category runs on one, whether you’ve mapped it or not.
Buying and Range: Pack and Lifecycle Terms
SKU (Stock Keeping Unit): the unique identifier for each distinct product or variant you sell. Every size, colour, and pack count gets its own SKU.
Pre-Pack: a multi-size or multi-variant pack assembled by the supplier for inbound and outbound fulfilment. Reduces handling cost at the cost of some flexibility.
Inner Carton Size: the quantity of a single SKU packed inside the smallest sellable carton from a supplier. Useful to know before committing to a minimum order quantity.
Outer Carton Size: the quantity of inner cartons packed inside the larger master carton used for shipping and warehousing. Drives freight cost and pallet efficiency more than most buyers realise.
Sell-In: the act of a supplier selling product into a retailer. This is a sale on paper, not yet a sale to a real customer.
Sell-Out: the point where a product actually sells through to the end consumer. The number that matters more than sell-in, every time.
Phase In / Phase Out: the planned process of introducing new SKUs to a range and retiring old ones in a controlled, rather than chaotic, way.
Stock and Inventory: Basics
Stock Turn (Inventory Turnover): how many times stock sells through and gets replaced in a given period. Higher generally means healthier cash flow.
Sell-Through Rate: the percentage of received stock that has actually sold within a set period. This is the number that tells you if a buy was right.
Open-to-Buy (OTB): the budget or quantity still available to purchase in a given period, based on what’s already committed. Buy past your OTB and you’re funding stock with cash you don’t have.
SOH (Stock on Hand): the total amount of inventory physically held right now, at SKU level or in total. The honest answer to “what have we actually got?”
SOO (Stock on Order): inventory that’s been ordered from a supplier but hasn’t arrived yet. Add it to SOH to see your true incoming position.
OOS (Out of Stock): when a product that should be available for sale has none left on the shelf or in the system. The retail version of a missed opportunity.
Stock Allocation: the process of deciding how much stock goes to which store, channel, or location, based on demand and performance. Get allocation wrong and one store overflows while another sells out.
Forecasting: predicting future demand using historical sales, trends, and seasonality, to guide what and how much to buy. Good forecasting turns buying from guesswork into a discipline.
Min/Max: a replenishment method that sets a minimum stock level to trigger a reorder and a maximum level to cap how much comes in. Simple to run and well suited to predictable, steady-selling lines.
Stock and Inventory: Metrics and Lifecycle
Dead Stock / Obsolescence: stock that no longer sells or has lost market relevance. Left alone, it ties up cash, space, and attention.
Aged Stock: inventory that’s sat unsold beyond a set threshold, commonly 90 or 180 days. The longer it sits, the less it’s worth.
Weeks of Supply (WOS): how many weeks your current stock will last at the current sales rate. A practical companion to lead time when deciding how much buffer to hold.
Days Inventory on Hand (DOH): how many days your current stock will last at the current sales rate, expressed in days rather than weeks. Useful for fast-moving categories.
Reorder Point: the stock level that triggers a new order. Set it too low and you stock out before the next delivery arrives.
Backorder: when an order is taken for a product that’s currently out of stock, with a promise to fulfil it once new stock arrives.
Cycle Count: a partial, rolling stocktake of selected SKUs, used to check accuracy without shutting down for a full count.
Stocktake: a full physical count of all stock on hand, used to verify what the system says you have against what’s actually on the shelf and in the stockroom. The reality check every other inventory number depends on.
FIFO (First In, First Out): selling or using the oldest stock first. Standard practice for anything with a shelf life or use-by relevance.
Pricing and Margin: Core Concepts
Margin (Gross Margin): the difference between sell price and cost price, in dollars or percentage. The single most important number in category management.
Markup: the amount added to cost price to set the sell price. Markup and margin are related but not the same and mixing them up costs people real money.
GMROI (Gross Margin Return on Investment): margin earned relative to average inventory investment. A high margin doesn’t always mean a good use of cash. GMROI tells you which.
Net Margin: profit remaining after all operating costs are deducted, not just cost of goods. A more honest picture than gross margin alone.
COGS (Cost of Goods Sold): the direct cost of the products sold in a given period. The starting point for almost every margin calculation.
Price Architecture: the structured logic behind pricing across a range, such as good/better/best tiers and clear price points. Good architecture guides the customer. Bad architecture confuses them.
Price Elasticity: how sensitive demand is to a change in price. Some categories can absorb a price rise without losing volume. Others can’t.
Pricing and Margin: Price Points and Adjustments
RRP (Recommended Retail Price): the price suggested by a supplier or manufacturer. A starting point, not a rule.
SRP (Suggested Retail Price): another name for the same concept as RRP, more commonly used in international and US-influenced supplier paperwork. If you see SRP on an invoice, treat it exactly as you would RRP.
MAP (Minimum Advertised Price): the lowest price a retailer is permitted to publicly advertise, set by a supplier. You can still sell below it in store. You just can’t advertise it.
Keystone Pricing: setting the sell price at double the wholesale or cost price. Simple, common, and not always right for every category.
Landed Cost: the total cost of a product including freight, duties, and handling to get it shelf-ready. If you’re pricing off invoice cost alone, you’re underpricing.
Markdown: a planned price reduction, usually to clear stock or drive volume. Planned markdowns protect margin. Panic markdowns destroy it.
Supplier and Trade Terms: Commercial Agreements
Trade Terms: the agreed commercial conditions between retailer and supplier, covering pricing, payment, and rebates.
Purchase Order (PO): the formal document confirming what’s being ordered, in what quantity, at what price, and by when. Once accepted, it’s a binding commitment from both sides.
Rebate: a retrospective payment from supplier to retailer, often tied to volume or performance. Know what triggers it and track whether you’re actually hitting it.
Promotional Funding: supplier-provided money or discount that supports a retailer promotion. Ask for it. Don’t assume it.
Co-op Advertising / Marketing: shared marketing investment between supplier and retailer, usually tied to a campaign or promotional period.
MOQ (Minimum Order Quantity): the smallest quantity a supplier will accept per order. Useful to know before you commit cash flow to a new line.
Consignment Stock: stock supplied to a retailer but only paid for once it sells. Lower risk for the retailer, and worth understanding if you’re a supplier trying to get into a new store.
Sale or Return: a supplier agreement allowing unsold stock to be returned for full credit. Common in books and seasonal lines, and worth confirming before you commit to a large buy.
Supplier and Trade Terms: Performance and Returns
RA (Return Authority): formal approval from a supplier allowing stock to be sent back for credit or replacement. Always get the RA confirmed before returning anything, not after.
DOA (Dead on Arrival): a product that’s faulty or non-functional straight out of the box, before it’s ever been used. Most suppliers have a short reporting window for DOA claims, so check it before you sign off a delivery.
Vendor Scorecard: a structured tool for tracking supplier performance against agreed KPIs. If you don’t have one, your supplier relationships are running on memory and goodwill.
DIFOT (Delivery In Full, On Time): the percentage of supplier orders delivered complete and on the agreed date. The cleanest single number for whether a supplier is reliable.
Exclusivity Agreement: a commercial arrangement where a supplier agrees not to sell a product to competing retailers within a defined market or category.
Vendor Compliance: the standards a supplier is required to meet on packaging, labelling, delivery, and documentation. Non-compliance is usually what triggers a chargeback.
Logistics and Freight Terms
Lead Time: the time between placing an order and receiving stock. Longer lead times need more forward planning and tighter forecasting.
FIS (Free In Store): a freight term meaning the supplier covers all costs and risk until the goods arrive at your store or warehouse, ready to sell. The most expensive freight term for a supplier to agree to, and the simplest for a retailer to manage.
FOB (Free on Board): a freight term meaning the supplier’s responsibility ends once goods are loaded onto the ship. From that point, freight cost and risk transfer to the buyer.
Ex Works (EXW): a freight term meaning goods are made available for collection at the supplier’s premises. The buyer arranges and pays for everything from there.
DDP (Delivered Duty Paid): a freight term meaning the supplier covers transport, duties, and customs clearance all the way to the named destination.
Freight Forwarder: a third party that arranges the movement of goods on behalf of a retailer or supplier, managing carriers, documentation, and customs.
3PL (Third-Party Logistics): an external provider handling warehousing, fulfilment, and shipping on behalf of a retailer. Common for businesses that don’t want to run their own warehouse.
Dock-to-Stock: the time between goods arriving at a warehouse and being available for sale or dispatch. A shorter dock-to-stock time means cash converts to available stock faster.
DIFOTAI (Delivery In Full, On Time, and Accurately Invoiced): an extended version of DIFOT that also checks whether the supplier’s invoice matches what was actually delivered.
Merchandising and Space: Fixtures and Display
Planogram (POG): a visual map showing exact product placement and facings on shelf. The silent salesperson that never clocks off.
Facings: the number of product units visible or fronting on shelf. More facings on a winner usually means more sales.
Eye Level: the shelf height roughly at customer eye line, generally the strongest selling position. Earn it for your best performers.
Gondola (Gondola Bay, Gondola End): a freestanding, double-sided shelving fixture used in the middle of a store floor. A gondola bay is one section of that run. The gondola end is the high-traffic face at either tip of the run, and some of the most valuable real estate in a store.
Wall Bay: a single section of wall-mounted shelving, used as the standard unit when measuring or allocating perimeter shelf space. Wall bays typically run taller than gondola bays and are well suited to bulkier or higher-volume stock.
Pyramid Display: a fixture or stacked arrangement that builds product upward into a pyramid shape, used to create a bold, eye-catching focal point for a promotion or new release.
Perspex Stands: clear acrylic display fixtures used to lift, separate, or feature specific products on shelf or counter. Inexpensive, durable, and useful for drawing the eye without competing with the product itself.
Hangsell: a point-of-sale display that hangs products from hooks rather than sitting them on a shelf. Common for impulse lines near the counter, and effective because it keeps stock visible and easy to grab.
Merchandising and Space: Layout and Strategy
Product Placement: the deliberate decision about where a product sits within a store or category, including which fixture, which shelf, and which neighbouring products. The single biggest lever in merchandising that costs nothing to use well.
Cross-Merchandising: displaying complementary products together to encourage additional purchases. Simple, cheap, and consistently underused.
Visual Merchandising (VM): the deliberate use of layout, colour, and display to influence buying behaviour. It’s not decoration. It’s strategy you can see.
Hot Spot: an area of a store that naturally attracts higher customer traffic, often near entrances, checkouts, or main aisles.
Block Merchandising: grouping all SKUs of one brand or sub-category together in a solid visual block, rather than scattering them, to maximise stand-out on shelf.
Multi-Location Merchandising: positioning the same product in more than one place in the store, recognising it may serve more than one purpose for the shopper.
Range Cover: a measure of how much of a market a retailer’s range covers, expressed as a percentage of total market value or volume. Tells you how complete your offer really is.
Performance and Analytics: Sales Metrics
Like-for-Like (LFL) Sales: comparable sales performance between two periods, excluding new or closed stores. The fairest way to compare growth.
Sales Density: sales generated per square metre of retail space. A useful companion metric to space productivity.
Square Metre Space Reporting: a structured reporting view that breaks sales and margin down by square metre across a store or category, used to compare space performance fairly across very different fixture sizes.
Conversion Rate: the percentage of shoppers who make a purchase. Traffic without conversion is just foot noise.
Basket Size (Average Transaction Value): the average value of a single customer transaction. Move this and you move revenue without needing more customers.
Category Penetration: the percentage of total transactions that include a product from a category. Tells you how essential a category really is to your customer base.
Performance and Analytics: Category Metrics
KPI (Key Performance Indicator): a defined metric used to track category or business performance. Pick a handful that matter and ignore the noise.
Out-of-Stock Rate: the percentage of time a product should have been available but wasn’t. Calculated as days out of stock divided by total days in the period.
Market Share: the percentage of total category sales in a market that belong to a specific retailer, brand, or supplier. The scoreboard for competitive position.
Distribution (Numeric / Weighted): a measure of how widely a product is stocked. Numeric distribution counts the number of stores stocking it. Weighted distribution adjusts that count by each store’s sales importance.
DPC (Direct Product Cost): all the costs directly tied to getting a product to the shelf and selling it, including handling, storage, and display. A fuller picture than invoice cost alone.
DPP (Direct Product Profitability): the actual profit a retailer makes on a product once DPC is taken into account. Often tells a very different story to gross margin alone.
Promotions and Marketing
GWP (Gift With Purchase): a promotional incentive offering a free item with a qualifying purchase. Works well when the gift is genuinely relevant.
BOGO (Buy One, Get One Free): a promotional mechanic offering a free second item with the purchase of the first. Effective at driving volume, but always check the combined margin before running it.
Loss Leader: a product priced below normal margin, sometimes at a loss, to drive footfall or basket size. Use sparingly and know your numbers before you commit.
Bundle / Multi-Buy: grouping products together at a combined price to lift basket value. A simple, effective lever most independents underuse.
Seasonality: predictable fluctuation in demand tied to time of year or events. Plan your buying cycle and your range review around it, not against it.
Embargoed Products: stock that has arrived but cannot be sold, displayed, or promoted until a set release date agreed with the supplier. Breaking an embargo can mean losing the line entirely and heavy fines can apply.
Rain Check: a written commitment to sell an out-of-stock sale item at the sale price once it’s back in stock. Under Australian Consumer Law, advertising a sale generally means honouring it or offering a rain check.
Feature and Display: a promotional mechanic combining a price feature (advertised price) with a physical display, used to maximise visibility and conversion during a campaign.
Trade Up / Trade Across: a supplier or retailer strategy encouraging customers to move to a higher-value product (trade up) or a related product in another category (trade across).
Upselling: encouraging a customer to buy a higher-value version of the product they’re already considering. Different from cross-selling, which suggests a related but separate product.
Family Upsell: encouraging a customer to buy multiple items from across the same product range, rather than just the one item they came in for. A stationery example: a customer buying a notebook is also offered a pen, pen holder, paper clips, diary, ruler, pencil case, planner, and notepads, building one full-range purchase instead of a single-item sale.
Where to From Here
Over a hundred terms is a lot to absorb in one sitting, and you don’t need to memorise all of them today. What matters is having this category management glossary on hand so the language stops being a barrier between you and better buying decisions.
If you want a deeper look at any of these terms applied to your own range, that’s exactly what a proper category review is for. For more practical breakdowns like this one, our Pharologue blog covers buying, pricing, supplier strategy, and category management in plain English.
For a closer look at where this approach comes from, you can read more about Pharotique CMG, or get in touch directly through our contact page.
For further reading on retail terminology more broadly, Shopify’s retail vocabulary guide is a solid companion resource, and the Australian Retail Council is worth following for the policy and industry side of the conversation. Inside Retail Australia is another good source for what these terms look like playing out in the market right now.
Know your terms. Know your numbers. That’s where better buying starts.
For category management support, book a consult with Christopher today.
Written by Christopher Salib
Founder, Pharotique Category Management Group
Pioneering Category Excellence – Strategic. Independent. Proudly Australian.
Pharotique CMG, PCMG, Category Management, Retail Strategy, Retail Glossary, Small Business Growth, Retail Buying, Australian Retail #Pharologue
