U.S.A. vs Alaska

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

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

U.S.A. (noun)	Alaska (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 northwestern North America; the 49th state admitted to the union