Catalog vs Directory vs Inventory

When to use each in English, with meaning, register, and examples.

Catalog

Top 2,000 (common)B1

Directory

Top 2,000 (common)C1noun

Inventory

Top 5,000 (fairly common)B1noun
 CatalogDirectoryInventory
Pronunciation🇬🇧 //ˈkæt.əl.ɒɡ//🇺🇸 //ˈkæt.əl.ɒg//🇬🇧 /["/dəˈrektəri//daɪˈrektəri/"]/🇺🇸 /["/dəˈrektəri//daɪˈrektəri/"]/🇬🇧 /["/ˈɪnvəntri/"]/🇺🇸 /["/ˈɪnvəntɔːri/"]/
MeaningA list of items, usually in a book or online.A list or collection of information about things, like names, addresses, or files.A list of items that a person or business has.
ExampleThe library has a new catalog of available books.The directory on the computer contains all the files related to the project.The store's inventory includes over 1,000 different products.
RegisterNeutralNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)Top 5,000 (fairly common)
CEFR levelB1C1B1
Part of speechnounnoun
Collocationsonline catalog, product catalog, library catalog, catalog entry, catalog itembusiness, telephone, trade, check, consult, compile, in a/​the directory, directory of, business, telephone, trade, check, consult, compile, in a/​the directory, directory ofcomplete, comprehensive, detailed, compile, complete, conduct, list something, in an/​the inventory, on an/​the inventory, excess, surplus, unsold, stock, replenish, liquidate, control, management
Antonymsdisarray, chaos, randomnessfile, documentdepletion, lack, shortage
Common mistakesConfusing with 'catalogue' which is the British spelling., Using 'catalog' as a verb incorrectly, instead of the noun form., Mistaking it for 'inventory' which can imply a detailed list of stock.Mixing it up with 'directory' vs 'directly'., Using 'direct' instead of 'directory' when referring to a list., Confusing the spelling with 'directrey'.Confused with 'invent' or 'invention'., Using it as a verb incorrectly., Saying 'inventories' when referring to a single list.
Usage notesUsed when referring to organized lists of items, products, or works. Avoid in very casual conversations.Used in contexts like business, computers, and phone listings. It is appropriate when talking about organization systems but may sound overly formal in casual conversations.Commonly used in business contexts to discuss supplies or stock. Not usually used in casual conversation.

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Inventory

Frequently asked questions: Catalog vs Directory vs Inventory

What's the difference between Catalog, Directory, and Inventory?

Catalog: A list of items, usually in a book or online. Directory: A list or collection of information about things, like names, addresses, or files. Inventory: A list of items that a person or business has.

Which is more advanced: Catalog, Directory, and Inventory?

Directory is the highest level, at C1, on the CEFR scale.

Are Catalog, Directory, and Inventory the same CEFR level?

Catalog: B1, Directory: C1, Inventory: B1 on the CEFR scale.

Can you show an example of each?

Catalog: The library has a new catalog of available books. Directory: The directory on the computer contains all the files related to the project. Inventory: The store's inventory includes over 1,000 different products.

Can I use Catalog, Directory, and Inventory interchangeably?

Not always. Catalog, Directory, and Inventory are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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