bestiality vs sex

bestiality and sex both are nouns.

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

As nouns, sex is a hypernym of bestiality; that is, sex is a word with a broader meaning than bestiality:

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

bestiality (noun)	sex (noun)
sexual activity between a person and an animal	activities associated with sexual intercourse
the stupid brutal quality of a beast	the properties that distinguish organisms on the basis of their reproductive roles
	all of the feelings resulting from the urge to gratify sexual impulses
	either of the two categories (male or female) into which most organisms are divided

bestiality (verb)	sex (verb)
	tell the sex (of young chickens)
	to evoke sexual feelings