smut vs sexual activity

smut and sexual activity both are nouns.

Word	Noun	Adjective	Verb	Adverb
smut	Yes	No	Yes	No
sexual activity	Yes	No	No	No

smut (noun)	sexual activity (noun)
creative activity (writing or pictures or films etc.) of no literary or artistic value other than to stimulate sexual desire	activities associated with sexual intercourse
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

smut (verb)	sexual activity (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