為残す[shinokosu] to leave unfinished
一人残らず[hitorinokorazu] everyone
居残り[inokori] working overtime
居残る[inokoru] to stay behind
残り[nokori] remnant

残り火[nokoribi] embers
残り物[nokorimono] leftovers (esp. food)
残る[nokoru] to remain
残骸[zangai] ruins
残基[zanki] residue

火焔放射器[kaenhoushaki] flamethrower
気焔万丈[kienbanjou] in high spirits
光焔[kouen] light and flame
紅焔[kouen] red flame
火焔[kaen] flame

情焔[jouen] burning passion
気焔[kien] high spirits
焔硝[enshou] gunpowder
残焔[zanen] lingering heat (in autumn)