black buck vs Antilope cervicapra

black buck and Antilope cervicapra both are nouns.

Word	Noun	Adjective	Verb	Adverb
black buck	Yes	No	No	No
Antilope cervicapra	Yes	No	No	No

As nouns, black buck and Antilope cervicapra are synonyms defined as:

black buck and Antilope cervicapra: common Indian antelope with a dark back and spiral horns

Other synonyms of black buck include blackbuck.

black buck (noun)	Antilope cervicapra (noun)
common Indian antelope with a dark back and spiral horns	common Indian antelope with a dark back and spiral horns