TN vs Tennessee

TN and Tennessee both are nouns.

Word	Noun	Adjective	Verb	Adverb
TN	Yes	No	No	No
Tennessee	Yes	No	No	No

As nouns, TN and Tennessee are synonyms defined as:

TN and Tennessee: a state in east central United States with capital Nashville

Other synonyms of TN include Tenn., Volunteer State.

TN (noun)	Tennessee (noun)
a state in east central United States with capital Nashville	a state in east central United States with capital Nashville
	a river formed by the confluence of two other rivers near Knoxville; it follows a U-shaped course to become a tributary of the Ohio River in western Kentucky