bestiality vs zooerastia

bestiality and zooerastia both are nouns.

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

As nouns, bestiality and zooerastia are synonyms defined as:

bestiality and zooerastia: sexual activity between a person and an animal

Other synonyms of bestiality include sodomy, zooerasty.

bestiality (noun)	zooerastia (noun)
sexual activity between a person and an animal	sexual activity between a person and an animal
the stupid brutal quality of a beast