North vs USA

North and USA both are nouns.

Word	Noun	Adjective	Verb	Adverb
North	Yes	No	No	No
USA	Yes	No	No	No

North (noun)	USA (noun)
the United States (especially the northern states during the American Civil War)	the army of the United States of America; the agency that organizes and trains soldiers for land warfare
the region of the United States lying to the north of the Mason-Dixon line	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
British statesman under George III whose policies led to rebellion in the American colonies (1732-1792)