Psittacus vs African gray

Psittacus and African gray both are nouns.

Word	Noun	Adjective	Verb	Adverb
Psittacus	Yes	No	No	No
African gray	Yes	No	No	No

Psittacus (noun)	African gray (noun)
type genus of the Psittacidae: usually restricted to the African grey	commonly domesticated grey parrot with red-and-black tail and white face; native to equatorial Africa