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

此の頃[konokoro] recently
一頃[hitokoro] once
何時頃[itsugoro] about when
近頃[chikagoro] lately
月頃[tsukigoro] these past months

見頃[migoro] best time to see
頃合い[koroai] suitable time
頃刻[keikoku] short period
今頃[imagoro] about this time
使い頃[tsukaigoro] handy