火燵掛布[kotatsugake] cover for kotatsu
火燵布団[kotatsubuton] cover for kotatsu
引火[inka] catching fire
引火温度[inkaondo] flash temperature
引火点[inkaten] flash point

曳火弾[eikadan] tracer bullet
煙火[enka] smoke and fumes (e.g. from cooking)
遠火[toobi] distant fire
下火[shitabi] burning low
下火になる[shitabininaru] to be under control

火縄銃[hinawajuu] matchlock
機関銃[kikanjuu] machine gun
軽機関銃[keikikanjuu] light machine gun
拳銃[kenjuu] pistol
元込め銃[motogomejuu] breechloader

叉銃[sajuu] stacked arms
催涙銃[sairuijuu] tear-gas gun
霰弾銃[sandanjuu] shotgun
自動小銃[jidoushoujuu] automatic rifle
重機関銃[juukikanjuu] heavy machine gun