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

御手玉[otedama] beanbag
やり玉[yaridama] make an example of
シャボン玉[shabondama] soap bubble
悪玉[akudama] bad character
あめ玉[amedama] candy

一円玉[ichiendama] one-yen coin
烏羽玉[ubatama] jet black
黄碧玉[kouhekigyoku] yellow jasper
火の玉[hinotama] falling star
火玉[hidama] falling star