unblemished vs perfect

unblemished is not a noun while perfect is a noun.

Word	Noun	Adjective	Verb	Adverb
unblemished	No	Yes	No	No
perfect	Yes	Yes	Yes	No

unblemished (noun)	perfect (noun)
	a tense of verbs used in describing action that has been completed (sometimes regarded as perfective aspect)

unblemished (adjective)	perfect (adjective)
free from physical or moral spots or stains	being complete of its kind and without defect or blemish
	precisely accurate or exact
	without qualification; used informally as (often pejorative) intensifiers

unblemished (verb)	perfect (verb)
	make perfect or complete