two categories of

USAGE SUMMARY

The phrase "two categories of" is correct and commonly used in written English.
It is typically used to describe two distinct groups or classifications within a larger category. Example: "There are two categories of people in this world: those who prefer chocolate and those who prefer vanilla."

✓ Grammatically correct

News & Media

Science

Academia

Human-verified examples from authoritative sources

Exact Expressions

59 human-written examples

"There are two categories of stores," he said.

The New York Times

There are two categories of animals that help people.

The New York Times - Magazine

There are two categories of people we're talking about.

The Guardian

A further two categories of citizen have emerged.

The Guardian - Opinion

The article also conflated two categories of former prisoners.

The New York Times

There are two categories of posture - static and dynamic.

Independent

But it also creates two categories of teachers.

The New York Times

There are two categories of children, below six years and above six years.

The Guardian

The note added: The article and headline also conflated two categories of former prisoners.

The New Yorker

The respondents suffered total losses in the two categories of about $62 million last year.

The New York Times

Of course, it is possible to unite the two categories of culture.

The Guardian

Expert writing Tips

Best practice

Use a colon or a dash immediately after the phrase if you intend to list the two categories right away for better readability.

Common error

Avoid saying "two category of" when you mean plural groups. Because the number "two" is used, the word "category" must always be pluralized to "categories" to agree with the quantifier.

Linguistic Context

The phrase "two categories of" functions as a complex quantifier or a partitive noun phrase. It serves as a structural signpost in a sentence, signaling to the reader that a classification is about to follow. According to Ludwig, it is frequently used to provide organizational clarity in complex sentences, ensuring the reader can follow a binary logic.

Expression frequency: Very common

Frequent in

Science

45%

News & Media

40%

Formal & Business

10%

Less common in

Social Media

2%

Wiki

2%

Reference

1%

Ludwig's WRAP-UP

The phrase "two categories of" is a robust and highly reliable linguistic tool for any writer seeking to organize information clearly. Data from Ludwig AI confirms its prevalence in prestigious publications, ranging from hard science journals to cultural commentary in The New Yorker. It is particularly effective because it sets up a clear expectation for the reader: that the world, or at least the topic at hand, can be understood through two distinct lenses. To use it most effectively, ensure the noun following it is plural and that your subsequent description clearly defines the boundary between the two groups. Whether you are writing a research paper or a news report, this phrase remains a gold standard for structural clarity.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

two types of

More common in general and informal conversation

two classes of

Often used in sociological or formal taxonomic contexts

two distinct groups of

Emphasizes the separation and lack of overlap between the sets

two sorts of

Slightly more colloquial than using categories

two varieties of

Suggests slight variations within a single species or product type

two branches of

Implies a shared origin that later diverged into two paths

two divisions of

Focuses on the administrative or structural split of a whole

two tiers of

Introduces a sense of hierarchy or level-based classification

two genres of

Specifically used for artistic, literary or musical works

two schools of

Used primarily for differing thought processes or ideologies

FAQs

How to use "two categories of" in a sentence?

You can use it to introduce a binary classification, such as "The study identified "two categories of" participants: those who exercised and those who did not."

What is the difference between "two categories of" and "two types of"?

While often interchangeable, ""two categories of"" sounds more formal and academic, whereas "two types of" is more common in everyday speech.

Is it better to use "two classes of" instead?

It depends on the field. Use "two classes of" if you are referring to social status or specific scientific taxons; otherwise, sticking with categories is usually safer.

Can I say "two distinct groups of" for more emphasis?

Yes, using "two distinct groups of" is a great way to emphasize that the subjects are very different from each other.