potentiality vs capable

potentiality is a noun but capable is not a noun.

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

potentiality (noun)	capable (noun)
an aptitude that may be developed
the inherent capacity for coming into being

potentiality (adjective)	capable (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