Lake Saint Clair vs MI

Lake Saint Clair and MI both are nouns.

Word	Noun	Adjective	Verb	Adverb
Lake Saint Clair	Yes	No	No	No
MI	Yes	No	No	No

Lake Saint Clair (noun)	MI (noun)
a lake between Ontario and Michigan; connected with Lake Huron and Lake Erie	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