sex vs smut

sex and smut both are nouns.

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

sex (noun)	smut (noun)
activities associated with sexual intercourse	creative activity (writing or pictures or films etc.) of no literary or artistic value other than to stimulate sexual desire
the properties that distinguish organisms on the basis of their reproductive roles	an offensive or indecent word or phrase
all of the feelings resulting from the urge to gratify sexual impulses	any fungus of the order Ustilaginales
either of the two categories (male or female) into which most organisms are divided	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

sex (verb)	smut (verb)
tell the sex (of young chickens)	affect with smut or mildew, as of a crop such as corn
to evoke sexual feelings	stain with a dirty substance, such as soot
	become affected with smut
	make obscene