Equus asinus vs ass

Equus asinus and ass both are nouns.

Word	Noun	Adjective	Verb	Adverb
Equus asinus	Yes	No	No	No
ass	Yes	No	No	No

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

Equus asinus: domestic beast of burden descended from the African wild ass; patient but stubborn
ass: hardy and sure-footed animal smaller and with longer ears than the horse

Equus asinus (noun)	ass (noun)
domestic beast of burden descended from the African wild ass; patient but stubborn	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