justice vs adjudicator

justice and adjudicator both are nouns.

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

As nouns, adjudicator is a hypernym of justice; that is, adjudicator is a word with a broader meaning than justice:

justice: a public official authorized to decide questions brought before a court of justice
adjudicator: a person who studies and settles conflicts and disputes

Other hypernyms of justice include functionary, official.

justice (noun)	adjudicator (noun)
judgment involved in the determination of rights and the assignment of rewards and punishments	a person who studies and settles conflicts and disputes
the quality of being just or fair
a public official authorized to decide questions brought before a court of justice