carabao vs Bubalus bubalis

carabao and Bubalus bubalis both are nouns.

Word	Noun	Adjective	Verb	Adverb
carabao	Yes	No	No	No
Bubalus bubalis	Yes	No	No	No

As nouns, Bubalus bubalis is a hypernym of carabao; that is, Bubalus bubalis is a word with a broader meaning than carabao:

carabao: water buffalo of the Philippines
Bubalus bubalis: an Asian buffalo that is often domesticated for use as a draft animal

Other hypernyms of carabao include Asiatic buffalo, water buffalo, water ox.

carabao (noun)	Bubalus bubalis (noun)
water buffalo of the Philippines	an Asian buffalo that is often domesticated for use as a draft animal