buzzard vs Cathartes aura

buzzard and Cathartes aura both are nouns.

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

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

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 buzzard include turkey buzzard, turkey vulture.

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
the common European short-winged hawk