U.S.A. vs Palmetto State

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

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

U.S.A. (noun)	Palmetto 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 state in the Deep South; one of the original 13 colonies