First State vs USA

First State and USA both are nouns.

Word	Noun	Adjective	Verb	Adverb
First State	Yes	No	No	No
USA	Yes	No	No	No

First State (noun)	USA (noun)
a Mid-Atlantic state; one of the original 13 colonies, with capital Dover	the army of the United States of America; the agency that organizes and trains soldiers for land warfare
	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