adjudicator vs official

adjudicator and official both are nouns.

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

As nouns, official is a hyponym of adjudicator; that is, official is a word with a more specific, narrower meaning than adjudicator:

Other hyponyms of adjudicator include judge, jurist, justice.

adjudicator (noun)	official (noun)
a person who studies and settles conflicts and disputes	someone who administers the rules of a game or sport
	a worker who holds or is invested with an office

adjudicator (adjective)	official (adjective)
	having official authority or sanction
	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