turkey vulture vs turkey buzzard

turkey vulture and turkey buzzard both are nouns.

Word	Noun	Adjective	Verb	Adverb
turkey vulture	Yes	No	No	No
turkey buzzard	Yes	No	No	No

As nouns, turkey vulture and turkey buzzard are synonyms defined as:

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

Other synonyms of turkey vulture include buzzard, Cathartes aura.

turkey vulture (noun)	turkey buzzard (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