perversion vs sexual activity

perversion and sexual activity both are nouns.

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

As nouns, sexual activity is a hypernym of perversion; that is, sexual activity is a word with a broader meaning than perversion:

Other hypernyms of perversion include sex, sex activity, sexual practice.

perversion (noun)	sexual activity (noun)
the action of perverting something (turning it to a wrong use)	activities associated with sexual intercourse
an aberrant sexual practice
a curve that reverses the direction of something