ass vs smut

ass and smut both are nouns.

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

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
hardy and sure-footed animal smaller and with longer ears than the horse	an offensive or indecent word or phrase
the fleshy part of the human body that you sit on	any fungus of the order Ustilaginales
a pompous fool	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

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