USA vs Old Dominion

USA and Old Dominion both are nouns.

Word	Noun	Adjective	Verb	Adverb
USA	Yes	No	No	No
Old Dominion	Yes	No	No	No

USA (noun)	Old Dominion (noun)
the army of the United States of America; the agency that organizes and trains soldiers for land warfare	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