St. Lawrence River vs USA

St. Lawrence River and USA both are nouns.

Word	Noun	Adjective	Verb	Adverb
St. Lawrence River	Yes	No	No	No
USA	Yes	No	No	No

St. Lawrence River (noun)	USA (noun)
a North American river; flows into the Gulf of Saint Lawrence and the North Atlantic	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