ass vs jennet

ass and jennet both are nouns.

Word	Noun	Adjective	Verb	Adverb
ass	Yes	No	No	No
jennet	Yes	No	No	No

As nouns, jennet is a hyponym of ass; that is, jennet is a word with a more specific, narrower meaning than ass:

ass: hardy and sure-footed animal smaller and with longer ears than the horse
jennet: female donkey

Other hyponyms of ass include domestic ass, donkey, Equus asinus, jack, jackass, jenny, jenny ass, wild ass.

ass (noun)	jennet (noun)
slang for sexual intercourse	female donkey
hardy and sure-footed animal smaller and with longer ears than the horse
the fleshy part of the human body that you sit on
a pompous fool