turkey buzzard vs turkey vulture

turkey buzzard and turkey vulture both are nouns.

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

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

turkey buzzard and turkey vulture: 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, Cathartes aura.

turkey buzzard (noun)	turkey vulture (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