Buttocks vs Rear

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

Buttocks

Top 5,000 (fairly common)

Rear

Top 2,000 (common)C1adjective
Most common: Rear
 ButtocksRear
Pronunciation🇬🇧 //ˈbʌt.ɒks//🇺🇸 //ˈbʌt.ɑːks//🇬🇧 /["/rɪə(r)/"]/🇺🇸 /["/rɪr/"]/
MeaningThe two round parts at the back of your body.The back part of something or the back side.
ExampleHe fell and landed right on his buttocks.front and rear windows
RegisterNeutralNeutral
How commonTop 5,000 (fairly common)Top 2,000 (common)
CEFR level-C1
Part of speechadjective
Collocationsfirm buttocks, tight buttocks, buttocks muscles, sore buttocksrear view, rear end, rear section, rear window, rear guard
Antonyms-front, beginning, lead
Common mistakesConfused with 'butt' as a slang term., Used too openly in formal settings.Confused with 'rare' in pronunciation., Used incorrectly as a verb instead of a noun., Misplaced in phrases where 'back' would be more natural.
Usage notesCommonly used in medical or anatomical contexts. Informal synonyms may sound crude. Avoid in polite conversation.Use 'rear' when referring to the back part of an object or person. It is neutral and commonly used in both casual and formal contexts. Avoid using it in very informal speech where simpler terms like 'back' may be preferred.

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Buttocks
Rear

Frequently asked questions: Buttocks vs Rear

What's the difference between Buttocks and Rear?

Buttocks: The two round parts at the back of your body. Rear: The back part of something or the back side.

Which is more common: Buttocks and Rear?

Rear is the most common in everyday English.

Can you show an example of each?

Buttocks: He fell and landed right on his buttocks. Rear: front and rear windows

Can I use Buttocks and Rear interchangeably?

Not always. Buttocks and Rear 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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