official vs established

official is a noun but established is not a noun.

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

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

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