defensibility vs capability

defensibility and capability both are nouns.

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

As nouns, capability is a hypernym of defensibility; that is, capability is a word with a broader meaning than defensibility:

defensibility: capability of being defended
capability: the quality of being capable -- physically or intellectually or legally

Other hypernyms of defensibility include capableness.

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