unofficial vs official

unofficial is not a noun while official is a noun.

Word	Noun	Adjective	Verb	Adverb
unofficial	No	Yes	No	No
official	Yes	Yes	No	No

unofficial (noun)	official (noun)
	someone who administers the rules of a game or sport
	a worker who holds or is invested with an office

unofficial (adjective)	official (adjective)
not having official authority or sanction	having official authority or sanction
not officially established	of or relating to an office
	verified officially
	(of a church) given official status as a national or state institution
	conforming to set usage, procedure, or discipline