perfectibility vs capableness

perfectibility and capableness both are nouns.

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

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

Other hypernyms of perfectibility include capability, potentiality.

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