established vs official

established is not a noun while official is a noun.

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

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

established (adjective)	official (adjective)
brought about or set up or accepted; especially long established	having official authority or sanction
introduced from another region and persisting without cultivation	of or relating to an office
conforming with accepted standards	verified officially
shown to be valid beyond a reasonable doubt	(of a church) given official status as a national or state institution
settled securely and unconditionally	conforming to set usage, procedure, or discipline