capable vs capability

capable is not a noun while capability is a noun.

Word	Noun	Adjective	Verb	Adverb
capable	No	Yes	No	No
capability	Yes	No	No	No

capable (noun)	capability (noun)
	the quality of being capable -- physically or intellectually or legally
	an aptitude that may be developed
	the susceptibility of something to a particular treatment

capable (adjective)	capability (adjective)
(usually followed by `of') having capacity or ability
(followed by `of') having the temperament or inclination for
having the requisite qualities for
have the skills and qualifications to do things well
possibly accepting or permitting