vision defect vs disablement

vision defect and disablement both are nouns.

Word	Noun	Adjective	Verb	Adverb
vision defect	Yes	No	No	No
disablement	Yes	No	No	No

As nouns, disablement is a hypernym of vision defect; that is, disablement is a word with a broader meaning than vision defect:

vision defect: impairment of the sense of sight
disablement: the condition of being unable to perform as a consequence of physical or mental unfitness

Other hypernyms of vision defect include disability, handicap, impairment.

vision defect (noun)	disablement (noun)
impairment of the sense of sight	the condition of being unable to perform as a consequence of physical or mental unfitness