Gun

ガン

gan

(portable, short weapon, for hand use)

大砲

taihō

(military: cannon with relatively long barrel, operating with relatively low angle of fire, and having a high muzzle velocity)

鉄砲

teppō

(portable, short weapon, for hand use)

銃

jū

(portable, short weapon, for hand use)

銃

jū

(military: cannon with relatively long barrel, operating with relatively low angle of fire, and having a high muzzle velocity)