valuator vs appraiser

valuator and appraiser both are nouns.

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

As nouns, valuator and appraiser are synonyms defined as:

valuator and appraiser: one who estimates officially the worth or value or quality of things

valuator (noun)	appraiser (noun)
one who estimates officially the worth or value or quality of things	one who estimates officially the worth or value or quality of things
	one who determines authenticity (as of works of art) or who guarantees validity