U.S. vs Old Dominion State

U.S. and Old Dominion State both are nouns.

Word	Noun	Adjective	Verb	Adverb
U.S.	Yes	No	No	No
Old Dominion State	Yes	No	No	No

U.S. (noun)	Old Dominion State (noun)
the executive and legislative and judicial branches of the federal government of the United States	a state in the eastern United States; one of the original 13 colonies; one of the Confederate States in the American Civil War
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