Synonyms and related words :
alluvion, alluvium, ash, cinder, clinker, debris, deposit, deposition, deposits, detritus, draff, dregs, drift, dross, ember, feces, froth, grounds, lees, loess, moraine, offscum, precipitate, precipitation, scoria, scree, scum, sediment, settlings, silt, sinter, slag, smut, soot, sublimate