carabao vs water buffalo

carabao and water buffalo both are nouns.

Word	Noun	Adjective	Verb	Adverb
carabao	Yes	No	No	No
water buffalo	Yes	No	No	No

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

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

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

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