evaluator vs critic

evaluator and critic both are nouns.

Word	Noun	Adjective	Verb	Adverb
evaluator	Yes	No	No	No
critic	Yes	No	No	No

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

Other hyponyms of evaluator include appraiser, valuator, arbiter, arbitrator, umpire.

evaluator (noun)	critic (noun)
an authority who is able to estimate worth or quality	a person who is professionally engaged in the analysis and interpretation of works of art
	anyone who expresses a reasoned judgment of something
	someone who frequently finds fault or makes harsh and unfair judgments