piece of ass vs smut

piece of ass and smut both are nouns.

Word	Noun	Adjective	Verb	Adverb
piece of ass	Yes	No	No	No
smut	Yes	No	Yes	No

piece of ass (noun)	smut (noun)
slang for sexual intercourse	creative activity (writing or pictures or films etc.) of no literary or artistic value other than to stimulate sexual desire
	an offensive or indecent word or phrase
	any fungus of the order Ustilaginales
	destructive diseases of plants (especially cereal grasses) caused by fungi that produce black powdery masses of spores
	a black colloidal substance consisting wholly or principally of amorphous carbon and used to make pigments and ink

piece of ass (verb)	smut (verb)
	affect with smut or mildew, as of a crop such as corn
	stain with a dirty substance, such as soot
	become affected with smut
	make obscene