Upper Peninsula vs MI

Upper Peninsula and MI both are nouns.

Word	Noun	Adjective	Verb	Adverb
Upper Peninsula	Yes	No	No	No
MI	Yes	No	No	No

Upper Peninsula (noun)	MI (noun)
the peninsula between Lake Superior and Lake Michigan that forms the northwestern part of Michigan	the government agency in the United Kingdom that is responsible for internal security and counterintelligence on British territory
	the government agency in the United Kingdom that is responsible for internal security and counterintelligence overseas
	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