Concerns vs I have many affairs of importance

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

Concerns

Top 1,000 (very common)

I have many affairs of importance

FormalBeyond 10,000 (less common)
Most formal: I have many affairs of importanceMost common: Concerns
 ConcernsI have many affairs of importance
Pronunciation🇬🇧 //kənˈsɜːnz//🇺🇸 //kənˈsɜrnz//🇬🇧 //aɪ hæv ˈmɛni əˈfɛəz ʌv ɪmˈpɔːtəns//🇺🇸 //aɪ həv ˈmɛni əˈfɛrz ʌv ɪmˈpɔrtəns//
MeaningThings that worry or interest someone.I have many important matters.
ExampleThe teacher expressed her concerns about the students' performance.I have many affairs of importance to discuss with you.
RegisterNeutralFormal
How commonTop 1,000 (very common)Beyond 10,000 (less common)
Collocationsraise concerns, have concerns, share concerns, address concerns, express concernsimportant affairs, handle affairs, affairs of state, personal affairs, public affairs
Antonymscomforts, assurances-
Common mistakesConfused with 'concern' vs 'concerns' when referring to multiple issues, Using 'concerns' without a clear subject, leading to vague statements, Misusing 'concerns' in informal contexts where simpler language is preferableConfused with 'affairs' referring to romantic relationships., Using 'affairs' in casual contexts where 'matters' would be more appropriate.
Usage notesUse 'concerns' when discussing issues or matters of importance, often in formal contexts. Avoid overly casual settingsTypically used in formal contexts, particularly in business or polite conversation. Avoid in casual or everyday talk.

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Concerns
I have many affairs of importance

Frequently asked questions: Concerns vs I have many affairs of importance

What's the difference between Concerns and I have many affairs of importance?

Concerns: Things that worry or interest someone. I have many affairs of importance: I have many important matters.

Which is more formal: Concerns and I have many affairs of importance?

I have many affairs of importance is the most formal of these.

Which is more common: Concerns and I have many affairs of importance?

Concerns is the most common in everyday English.

Can you show an example of each?

Concerns: The teacher expressed her concerns about the students' performance. I have many affairs of importance: I have many affairs of importance to discuss with you.

Can I use Concerns and I have many affairs of importance interchangeably?

Not always. Concerns and I have many affairs of importance 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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