appraise vs appraiser

appraise is not a noun while appraiser is a noun.

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

appraise (noun)	appraiser (noun)
	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

appraise (verb)	appraiser (verb)
consider in a comprehensive way
evaluate or estimate the nature, quality, ability, extent, or significance of