turkey vulture vs buzzard

turkey vulture and buzzard both are nouns.

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

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

turkey vulture and 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 Cathartes aura, turkey buzzard.

turkey vulture (noun)	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
	the common European short-winged hawk