USA vs WA

USA and WA both are nouns.

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

USA (noun)	WA (noun)
the army of the United States of America; the agency that organizes and trains soldiers for land warfare	a state in northwestern United States on the Pacific with capital Olympia
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