St. Lawrence vs U.S.

St. Lawrence and U.S. both are nouns.

Word	Noun	Adjective	Verb	Adverb
St. Lawrence	Yes	No	No	No
U.S.	Yes	No	No	No

St. Lawrence (noun)	U.S. (noun)
a North American river; flows into the Gulf of Saint Lawrence and the North Atlantic	the executive and legislative and judicial branches of the federal government of the United States
Roman martyr; supposedly Lawrence was ordered by the police to give up the church's treasure and when he responded by presenting the poor people of Rome he was roasted to death on a gridiron (died in 258)	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