Ohio vs U.S.

Ohio and U.S. both are nouns.

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

Ohio (noun)	U.S. (noun)
a midwestern state in north central United States in the Great Lakes region, with capital Columbus	the executive and legislative and judicial branches of the federal government of the United States
a river that is formed in western Pennsylvania and flows westward 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