Category vs Ilk

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

Category

Top 2,000 (common)B1noun

Ilk

Beyond 10,000 (less common)
Most common: Category
 CategoryIlk
Pronunciation🇬🇧 /["/ˈkætəɡəri/"]/🇺🇸 /["/ˈkætəɡɔːri/"]/🇬🇧 //ɪlk//🇺🇸 //ɪlk//
MeaningA group of things that are similar or share characteristics.A type or kind of something.
ExampleThe teacher asked us to sort the books into different category.He didn’t excel in sports, but he was good at academics of his ilk.
RegisterNeutralNeutral
How commonTop 2,000 (common)Beyond 10,000 (less common)
CEFR levelB1-
Part of speechnoun
Collocationsbroad, general, large, be included in, belong to, come into, comprise something, consist of something, contain something, in a/​the category, within a/​the category, category of, be in a category (all) of its/​your own, be in its/​your own category, be in the same category (as something)people of ilk, of that ilk, group of ilk
Antonymsindividual, single-
Common mistakesConfused with 'class' or 'type', using them interchangeably., Not using plural form when referring to multiple groups., Forgetting to differentiate between categories and subcategories.Confused with 'ilk' meaning 'like' in some informal uses., Using 'ilk' without a noun to clarify the type.
Usage notesUse 'category' when talking about classification or groups, but avoid in very casual conversations where simpler terms can be used.Use 'ilk' to refer to a kind, typically with a slightly formal tone. It’s good for written contexts but less common in everyday speech.

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Ilk

Frequently asked questions: Category vs Ilk

What's the difference between Category and Ilk?

Category: A group of things that are similar or share characteristics. Ilk: A type or kind of something.

Which is more common: Category and Ilk?

Category is the most common in everyday English.

Can you show an example of each?

Category: The teacher asked us to sort the books into different category. Ilk: He didn’t excel in sports, but he was good at academics of his ilk.

Can I use Category and Ilk interchangeably?

Not always. Category and Ilk 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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