wasting vs debility

wasting and debility both are nouns.

Word	Noun	Adjective	Verb	Adverb
wasting	Yes	No	No	No
debility	Yes	No	No	No

As nouns, debility is a hypernym of wasting; that is, debility is a word with a broader meaning than wasting:

wasting: any general reduction in vitality and strength of body and mind resulting from a debilitating chronic disease
debility: the state of being weak in health or body (especially from old age)

Other hypernyms of wasting include feebleness, frailness, frailty, infirmity, valetudinarianism.

wasting (noun)	debility (noun)
a decrease in size of an organ caused by disease or disuse	the state of being weak in health or body (especially from old age)
any general reduction in vitality and strength of body and mind resulting from a debilitating chronic disease