MI vs U.S.

MI and U.S. both are nouns.

Word	Noun	Adjective	Verb	Adverb
MI	Yes	No	No	No
U.S.	Yes	No	No	No

MI (noun)	U.S. (noun)
the government agency in the United Kingdom that is responsible for internal security and counterintelligence on British territory	the executive and legislative and judicial branches of the federal government of the United States
the government agency in the United Kingdom that is responsible for internal security and counterintelligence overseas	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 midwestern state in north central United States in the Great Lakes region, with capital Lansing
destruction of heart tissue resulting from obstruction of the blood supply to the heart muscle