U.S.A. vs Buckeye State

U.S.A. and Buckeye State both are nouns.

Word	Noun	Adjective	Verb	Adverb
U.S.A.	Yes	No	No	No
Buckeye State	Yes	No	No	No

U.S.A. (noun)	Buckeye State (noun)
North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776	a midwestern state in north central United States in the Great Lakes region, with capital Columbus