Used and loved by millions

Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

MitStanfordHarvardAustralian Nationa UniversityNanyangOxford

are of

Grammar usage guide and real-world examples

USAGE SUMMARY

'are of' is not correct or usable in written English.
If you are trying to make a comparison or reference, you can use the phrase 'are of the same' or 'are of a similar'. Example sentence: The two cakes are of the same flavor.

⚠ May contain grammatical issues

News & Media

Encyclopedias

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

Many are, of course.

News & Media

The New York Times

Few are, of course.

News & Media

The New York Times

They are of no consequence.

News & Media

Independent

Some are of historical interest.

News & Media

The Economist

"They are, of course, not.

News & Media

The Economist

are of contact-metamorphic origin.

Stocks are, of course, risky.

News & Media

The New York Times

(There are, of course, supertitles).

News & Media

The New York Times

Most are of Mexican origin.

News & Media

The New York Times

They are, of course, Irish.

News & Media

The Economist

There are, of course, nonbelievers.

News & Media

The New York Times
Show more...

Expert writing Tips

Best practice

When describing the composition of something, use "are made of" instead of "are of" for better clarity and grammatical correctness. For instance, say "The walls are made of brick" instead of "The walls are of brick".

Common error

Avoid using "are of" to indicate possession. Instead, use the possessive form "belong to" or "possess". For example, instead of saying "These ideas are of John", say "These ideas belong to John".

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

86%

Authority and reliability

2.8/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "are of" is frequently used to express relationships between entities, often indicating composition, origin, or characteristics. However, Ludwig AI identifies it as grammatically incorrect, suggesting that alternative constructions like "are made of" or "consist of" are preferable for greater clarity and correctness.

Expression frequency: Very common

Frequent in

News & Media

35%

Encyclopedias

30%

Science

15%

Less common in

Formal & Business

10%

Wiki

5%

Social Media

5%

Ludwig's WRAP-UP

While the phrase "are of" appears frequently across diverse sources such as news articles, encyclopedias, and scientific publications, it is flagged by Ludwig AI as grammatically incorrect. Although it is widely used to indicate relationships of composition, origin, or characteristics, better alternatives include phrases like "are made of", "consist of", or more specific verbs like "exhibit" or "display", especially in formal writing. To enhance clarity and grammatical accuracy, consider replacing "are of" with these alternatives, and be mindful of the context to choose the most appropriate substitute.

FAQs

How can I use "are made of" instead of "are of"?

Use "are made of" when you want to describe the materials something is composed of. For example, instead of saying "The table is of wood", say "The table "is made of" wood".

What are some alternatives to "are of" when describing characteristics?

When describing characteristics, you can use phrases like "are characterized by", "exhibit", or "display" for more grammatically sound sentences.

Which is correct, "are of" or "are made of"?

"are made of" is generally correct when describing the materials something is composed of. Ludwig AI identifies "are of" as grammatically incorrect in most contexts.

What's the difference between "are of" and "originate from"?

"Originate from" is used to indicate the source or origin of something, while "are of" is often misused in similar contexts. For instance, "These traditions "originate from" ancient cultures" is a better construction.

ChatGPT power + Grammarly precisionChatGPT power + Grammarly precision
ChatGPT + Grammarly

Editing plus AI, all in one place.

Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.

Source & Trust

86%

Authority and reliability

2.8/5

Expert rating

Real-world application tested

Most frequent sentences: