Air vs Breath

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

 AirBreath
MeaningThe invisible substance we breathe.The air you take into and out of your lungs.
CEFR levelA1B1
Part of speechnounnoun
Usage notesUsed in both formal and informal contexts. It's common in discussions about the environment, health, and science. Typically not used in slang or vulgar contexts.Used in both formal and informal contexts. Avoid in overly technical discussions about respiration, where 'respiration' might be more appropriate.

Frequently asked questions: Air vs Breath

What's the difference between "Air" and "Breath"?

"Air" means: The invisible substance we breathe. "Breath" means: The air you take into and out of your lungs.

When should I use "Air" and "Breath"?

They can all be used in everyday English.

Are "Air" and "Breath" the same CEFR level?

"Air" is at A1, "Breath" is at B1 on the CEFR scale.

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