Psittacus erithacus vs African grey

Psittacus erithacus and African grey both are nouns.

Word	Noun	Adjective	Verb	Adverb
Psittacus erithacus	Yes	No	No	No
African grey	Yes	No	No	No

As nouns, Psittacus erithacus and African grey are synonyms defined as:

Psittacus erithacus and African grey: commonly domesticated grey parrot with red-and-black tail and white face; native to equatorial Africa

Other synonyms of Psittacus erithacus include African gray.

Psittacus erithacus (noun)	African grey (noun)
commonly domesticated grey parrot with red-and-black tail and white face; native to equatorial Africa	commonly domesticated grey parrot with red-and-black tail and white face; native to equatorial Africa