evaluator vs valuator

evaluator and valuator both are nouns.

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

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

evaluator: an authority who is able to estimate worth or quality
valuator: one who estimates officially the worth or value or quality of things

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

evaluator (noun)	valuator (noun)
an authority who is able to estimate worth or quality	one who estimates officially the worth or value or quality of things