Missouri vs U.S.A.

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

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

Missouri (noun)	U.S.A. (noun)
a dialect of the Chiwere language spoken by the Missouri	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 central United States; a border state during the American Civil War, Missouri was admitted to the Confederacy without actually seceding from the Union
the longest river in the United States; arises in Montana and flows southeastward to become a tributary of the Mississippi at Saint Louis
a member of the Siouan people formerly inhabiting the valley of the Missouri river in Missouri