U.S. vs Great Lakes

U.S. and Great Lakes both are nouns.

Word	Noun	Adjective	Verb	Adverb
U.S.	Yes	No	No	No
Great Lakes	Yes	No	No	No

U.S. (noun)	Great Lakes (noun)
the executive and legislative and judicial branches of the federal government of the United States	a group of five large, interconnected lakes in central North America
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