ox vs Bos grunniens

ox and Bos grunniens both are nouns.

Word	Noun	Adjective	Verb	Adverb
ox	Yes	No	No	No
Bos grunniens	Yes	No	No	No

As nouns, Bos grunniens is a hyponym of ox; that is, Bos grunniens is a word with a more specific, narrower meaning than ox:

ox: any of various wild bovines especially of the genera Bos or closely related Bibos
Bos grunniens: large long-haired wild ox of Tibet often domesticated

Other hyponyms of ox include aurochs, Bos primigenius, urus, yak, banteng, banting, Bos banteng, tsine, Asian wild ox.

ox (noun)	Bos grunniens (noun)
any of various wild bovines especially of the genera Bos or closely related Bibos	large long-haired wild ox of Tibet often domesticated
an adult castrated bull of the genus Bos; especially Bos taurus