imperfectibility vs capableness

imperfectibility and capableness both are nouns.

Word	Noun	Adjective	Verb	Adverb
imperfectibility	Yes	No	No	No
capableness	Yes	No	No	No

As nouns, capableness is a hypernym of imperfectibility; that is, capableness is a word with a broader meaning than imperfectibility:

Other hypernyms of imperfectibility include capability, potentiality.

imperfectibility (noun)	capableness (noun)
the capability of becoming imperfect	the quality of being capable -- physically or intellectually or legally
	an aptitude that may be developed