domestic ass vs burro

domestic ass and burro both are nouns.

Word	Noun	Adjective	Verb	Adverb
domestic ass	Yes	No	No	No
burro	Yes	No	No	No

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

domestic ass: domestic beast of burden descended from the African wild ass; patient but stubborn
burro: small donkey used as a pack animal

Other hyponyms of domestic ass include moke.

domestic ass (noun)	burro (noun)
domestic beast of burden descended from the African wild ass; patient but stubborn	small donkey used as a pack animal