perfect vs perfectible

perfect is a noun but perfectible is not a noun.

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

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

perfect (adjective)	perfectible (adjective)
being complete of its kind and without defect or blemish	capable of becoming or being made perfect
precisely accurate or exact
without qualification; used informally as (often pejorative) intensifiers

perfect (verb)	perfectible (verb)
make perfect or complete