WI vs Wisconsin

WI and Wisconsin both are nouns.

Word	Noun	Adjective	Verb	Adverb
WI	Yes	No	No	No
Wisconsin	Yes	No	No	No

As nouns, WI and Wisconsin are synonyms defined as:

Other synonyms of WI include Badger State, Wis., Wisc..

WI (noun)	Wisconsin (noun)
a midwestern state in north central United States	a midwestern state in north central United States
	a tributary of the Mississippi River in Wisconsin