Arms vs Gun

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

Arms

Top 1,000 (very common)B2noun

Gun

Top 1,000 (very common)A2noun
 ArmsGun
Pronunciation🇬🇧 /["/ɑːmz/"]/🇺🇸 /["/ɑːrmz/"]/🇬🇧 /["/ɡʌn/"]/🇺🇸 /["/ɡʌn/"]/
MeaningThe upper limbs of the body used for lifting and holding things.A tool that shoots bullets.
ExampleShe raised her arms in excitement when she heard the good news.The police officer drew his gun to protect himself.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 1,000 (very common)
CEFR levelB2A2
Part of speechnounnoun
Collocationsnuclear, small, bear, carry, call somebody to, build-up, race, control, under armsbig, heavy, loaded, be armed with, carry, have, blaze, fire, go off, control, law, crime, the barrel of a gun, guns and ammunition, hold a gun on somebody, big, heavy, loaded, be armed with, carry, have, blaze, fire, go off, control, law, crime, the barrel of a gun, guns and ammunition, hold a gun on somebody
Antonymslegspeace, disarmament
Common mistakesConfusing 'arms' with 'arms' meaning weapons., Using 'arm' when referring to both limbs instead of the plural 'arms'.Confusing 'gun' with 'pistol' — not all guns are pistols., Using 'gun' to describe non-firearm weapons, like knives., Mispronouncing the word — some learners may pronounce it as 'gawn' instead of 'gun'.
Usage notesCommonly used in both formal and informal contexts. Appropriate when discussing the human body, physical actions, or even metaphorical uses (e.g., 'arms of a chair'). Not suitable for abstract contexts.Used in discussions about weapons, hunting, or self-defense. Not appropriate in casual conversations where violence may be discouraged. More accepted in law enforcement or military contexts.

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Arms
Gun

Frequently asked questions: Arms vs Gun

What's the difference between Arms and Gun?

Arms: The upper limbs of the body used for lifting and holding things. Gun: A tool that shoots bullets.

Which is more advanced: Arms and Gun?

Arms is the highest level, at B2, on the CEFR scale.

Are Arms and Gun the same CEFR level?

Arms: B2, Gun: A2 on the CEFR scale.

What part of speech are Arms and Gun?

Arms: noun, Gun: noun.

Can you show an example of each?

Arms: She raised her arms in excitement when she heard the good news. Gun: The police officer drew his gun to protect himself.

Can I use Arms and Gun interchangeably?

Not always. Arms and Gun 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.