jenny ass vs ass

jenny ass and ass both are nouns.

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

As nouns, ass is a hypernym of jenny ass; that is, ass is a word with a broader meaning than jenny ass:

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

jenny ass (noun)	ass (noun)
female donkey	slang for sexual intercourse
	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