marine vs United States

marine and United States both are nouns.

Word	Noun	Adjective	Verb	Adverb
marine	Yes	Yes	No	No
United States	Yes	No	No	No

marine (noun)	United States (noun)
a soldier who serves both on shipboard and on land	the executive and legislative and judicial branches of the federal government of the United States
	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

marine (adjective)	United States (adjective)
relating to or characteristic of or occurring on or in the sea
of or relating to the sea
of or relating to military personnel who serve both on land and at sea (specifically the U.S. Marine Corps)
relating to or involving ships or shipping or navigation or seamen
native to or inhabiting the sea