water ox vs Bubalus bubalis

water ox and Bubalus bubalis both are nouns.

Word	Noun	Adjective	Verb	Adverb
water ox	Yes	No	No	No
Bubalus bubalis	Yes	No	No	No

As nouns, water ox and Bubalus bubalis are synonyms defined as:

water ox and Bubalus bubalis: an Asian buffalo that is often domesticated for use as a draft animal

Other synonyms of water ox include Asiatic buffalo, water buffalo.

water ox (noun)	Bubalus bubalis (noun)
an Asian buffalo that is often domesticated for use as a draft animal	an Asian buffalo that is often domesticated for use as a draft animal