zooerastia vs sexual activity

zooerastia and sexual activity both are nouns.

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

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

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

zooerastia (noun)	sexual activity (noun)
sexual activity between a person and an animal	activities associated with sexual intercourse