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

鉱滓[kousai] slag
残滓[zanshi] remains
油滓[aburakasu] oil cake (fertilizer made of oily vegetable dregs)
味噌っ滓[misokkasu] miso lees
燃え滓[moekasu] cinders

食べ滓[tabekasu] leavings of a meal
搾り滓[shiborikasu] strained lees (e.g. sake, tofu)
熔滓[youshi] slag
搾め滓[shimekasu] oil cake