black vulture vs Coragyps atratus

black vulture and Coragyps atratus both are nouns.

Word	Noun	Adjective	Verb	Adverb
black vulture	Yes	No	No	No
Coragyps atratus	Yes	No	No	No

As nouns, black vulture and Coragyps atratus are synonyms defined as:

black vulture and Coragyps atratus: American vulture smaller than the turkey buzzard

Other synonyms of black vulture include carrion crow.

black vulture (noun)	Coragyps atratus (noun)
of southern Eurasia and northern Africa	American vulture smaller than the turkey buzzard
American vulture smaller than the turkey buzzard