ガンgan

1. noungun

• Synonym鉄砲てっぽうNeutral「鉄砲」 is a traditional, colloquial word for guns and muskets; the loanword 「ガン」 is the usual choice for guns in films and games.
• Synonym火器かきWritten「火器」 is a written, military umbrella term for firearms such as guns and cannons; it belongs to formal prose, unlike the everyday loanword 「ガン」.

For guns in films and games, use 「ガン」, as in 「ガンマン」 and 「エアガン」. Choose 「鉄砲」 for traditional firearms or in colloquial speech, and 「火器」 as the written umbrella term for guns and cannons.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 銃じゅう。
2. 銃じゅう状じょうのもので、引き金ひきがねを引ひくことで、液体えきたいを注入ちゅうにゅうするなどの目的もくてきを達成たっせいする機械きかい。