United States of America vs Saint Lawrence River

United States of America and Saint Lawrence River both are nouns.

Word	Noun	Adjective	Verb	Adverb
United States of America	Yes	No	No	No
Saint Lawrence River	Yes	No	No	No

United States of America (noun)	Saint Lawrence River (noun)
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	a North American river; flows into the Gulf of Saint Lawrence and the North Atlantic