U.S. vs Dakota

U.S. and Dakota both are nouns.

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

U.S. (noun)	Dakota (noun)
the executive and legislative and judicial branches of the federal government of the United States	the Siouan language spoken by the Dakota
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	the area of the states of North Dakota and South Dakota
	a member of the Siouan people of the northern Mississippi valley; commonly called the Sioux