Firearm vs Piece

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

Firearm

FormalTop 5,000 (fairly common)C1noun

Piece

Top 1,000 (very common)A1noun
Most formal: FirearmMost common: Piece
 FirearmPiece
Pronunciation🇬🇧 /["/ˈfaɪərɑːm/"]/🇺🇸 /["/ˈfaɪərɑːrm/"]/🇬🇧 /["/piːs/"]/🇺🇸 /["/piːs/"]/
MeaningA tool that shoots bullets.A part of something larger.
ExampleThe police were issued with firearms.Can I have a piece of cake, please?
RegisterFormalNeutral
How commonTop 5,000 (fairly common)Top 1,000 (very common)
CEFR levelC1A1
Part of speechnounnoun
Collocationsimitation, replica, unlicensed, be in possession of, own, possess, training, enthusiast, expertbig, huge, large, assemble, glue (back) together, put (back) together, in pieces, piece of, bits and pieces, break into pieces, smash into pieces, big, huge, large, assemble, glue (back) together, put (back) together, in pieces, piece of, bits and pieces, break into pieces, smash into pieces, big, huge, large, assemble, glue (back) together, put (back) together, in pieces, piece of, bits and pieces, break into pieces, smash into pieces, amazing, beautiful, brilliant, compose, produce, write, be called something, be entitled something, be titled something, piece by, piece for, piece from, a piece of music, a piece of sculpture, a piece of work, amazing, beautiful, brilliant, compose, produce, write, be called something, be entitled something, be titled something, piece by, piece for, piece from, a piece of music, a piece of sculpture, a piece of work, big, huge, large, assemble, glue (back) together, put (back) together, in pieces, piece of, bits and pieces, break into pieces, smash into pieces
Antonymspeace, harmony, calmwhole, complete, entire
Common mistakesConfused with 'firearms' which is the plural form., Using it in informal contexts where 'gun' is appropriate., Incorrectly assuming all firearms are the same.Confused with 'peace'., Used 'pieces' when referring to uncountable nouns incorrectly., Misused as a verb; it is primarily a noun.
Usage notesUse 'firearm' in legal or formal discussions about guns. Avoid in casual conversations where 'gun' is more common.Use this word when talking about parts of whole items, such as a piece of cake or a piece of furniture. It is neutral and widely acceptable in both spoken and written contexts.

Frequently asked questions: Firearm vs Piece

What's the difference between Firearm and Piece?

Firearm: A tool that shoots bullets. Piece: A part of something larger.

Which is more formal: Firearm and Piece?

Firearm is the most formal of these.

Which is more common: Firearm and Piece?

Piece is the most common in everyday English.

Are Firearm and Piece the same CEFR level?

Firearm: C1, Piece: A1 on the CEFR scale.

Can I use Firearm and Piece interchangeably?

Not always. Firearm and Piece 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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