Alaska vs AK

Alaska and AK both are nouns.

Word	Noun	Adjective	Verb	Adverb
Alaska	Yes	No	No	No
AK	Yes	No	No	No

As nouns, Alaska and AK are synonyms defined as:

Alaska and AK: a state in northwestern North America; the 49th state admitted to the union

Other synonyms of Alaska include Last Frontier.

Alaska (noun)	AK (noun)
a state in northwestern North America; the 49th state admitted to the union	a state in northwestern North America; the 49th state admitted to the union