円丘[enkyuu] knoll
丘上[kyuujou] hilltop
丘疹[kyuushin] pimple
丘陵[kyuuryou] hill
丘陵地帯[kyuuryouchitai] hill country

沙丘[sakyuu] sand dune
低丘陵[teikyuuryou] low hills
丘辺[okabe] vicinity of a hill
比丘[biku] bhikkhu (fully ordained Buddhist monk)

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

あっ砕[assai] crushing
圧砕機[assaiki] grinder
噛砕く[kamikudaku] to crunch
玉砕[gyokusai] honourable defeat
撃砕[gekisai] pulverising

砕く[kudaku] to break
砕け[kudake] familiar (informal) (speech style)
砕ける[kudakeru] to break (into pieces)
砕け散る[kudakechiru] to be smashed up
砕石[saiseki] broken stone