disability

As nouns the difference between disability and footwriting

is that disability is state of being disabled; deprivation or want of ability; absence of competent physical, intellectual, or moral power, means, fitness, and the like while footwriting is writing with the foot, as performed by those whose disability prevents them from writing with the hand.

As a noun disability

is state of being disabled; deprivation or want of ability; absence of competent physical, intellectual, or moral power, means, fitness, and the like.

As an adjective assistive is

providing or designed to provide assistance, especially to persons with a disability.