grasp vs capableness

grasp and capableness both are nouns.

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

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

Other hypernyms of grasp include capability, potentiality.

grasp (noun)	capableness (noun)
the act of grasping	the quality of being capable -- physically or intellectually or legally
an intellectual hold or understanding	an aptitude that may be developed
understanding of the nature or meaning or quality or magnitude of something
the limit of capability

grasp (verb)	capableness (verb)
get the meaning of something
hold firmly