wasting vs feebleness

wasting and feebleness both are nouns.

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

As nouns, feebleness is a hypernym of wasting; that is, feebleness 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
feebleness: the state of being weak in health or body (especially from old age)

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

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