turkey buzzard vs Cathartes aura

turkey buzzard and Cathartes aura both are nouns.

Word	Noun	Adjective	Verb	Adverb
turkey buzzard	Yes	No	No	No
Cathartes aura	Yes	No	No	No

As nouns, turkey buzzard and Cathartes aura are synonyms defined as:

turkey buzzard and Cathartes aura: a New World vulture that is common in South America and Central America and the southern United States

Other synonyms of turkey buzzard include buzzard, turkey vulture.

turkey buzzard (noun)	Cathartes aura (noun)
a New World vulture that is common in South America and Central America and the southern United States	a New World vulture that is common in South America and Central America and the southern United States