Arkansas vs U.S.

Arkansas and U.S. both are nouns.

Word	Noun	Adjective	Verb	Adverb
Arkansas	Yes	No	No	No
U.S.	Yes	No	No	No

Arkansas (noun)	U.S. (noun)
a state in south central United States; one of the Confederate states during the American Civil War	the executive and legislative and judicial branches of the federal government of the United States
a river that rises in the Rocky Mountains in Colorado and flows southeast through Kansas and Oklahoma and through Arkansas to become a tributary of the Mississippi River	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