Louisiana vs U.S.A.

Louisiana and U.S.A. both are nouns.

Word	Noun	Adjective	Verb	Adverb
Louisiana	Yes	No	No	No
U.S.A.	Yes	No	No	No

Louisiana (noun)	U.S.A. (noun)
a state in southern United States on the Gulf of Mexico; one of the Confederate states during the American Civil War	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