Here's what rhymes with characoal.
coal goal kohl whole role soul hole pole roll sole bowl fol mole poll toll knoll shoal dole foal bole boll thole vole tole dolour skoal stole parole scroll droll vacuole cajole troll prole rissole stroll enroll casserole extol unroll condole oriole maypole extoll innersole control patrol glycerol systole petiole bedroll camisole cubbyhole quadrupole arteriole buttonhole pigeonhole beanpole profiterole decontrol