bovine vs Bos indicus

bovine and Bos indicus both are nouns.

Word	Noun	Adjective	Verb	Adverb
bovine	Yes	Yes	No	No
Bos indicus	Yes	No	No	No

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

bovine: any of various members of the genus Bos
Bos indicus: any of several breeds of Indian cattle; especially a large American heat and tick resistant greyish humped breed evolved in the Gulf States by interbreeding Indian cattle and now used chiefly for crossbreeding

Other hyponyms of bovine include ox, wild ox, Bos taurus, cattle, cows, kine, oxen, Brahma, Brahman, Brahmin.

bovine (noun)	Bos indicus (noun)
any of various members of the genus Bos	any of several breeds of Indian cattle; especially a large American heat and tick resistant greyish humped breed evolved in the Gulf States by interbreeding Indian cattle and now used chiefly for crossbreeding

bovine (adjective)	Bos indicus (adjective)
of or relating to or belonging to the genus Bos (cattle)
dull and slow-moving and stolid; like an ox