wasting vs amyotrophy

wasting and amyotrophy both are nouns.

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

As nouns, amyotrophy is a hyponym of wasting; that is, amyotrophy is a word with a more specific, narrower meaning than wasting:

Other hyponyms of wasting include amyotrophia, tabes, kraurosis.

wasting (noun)	amyotrophy (noun)
a decrease in size of an organ caused by disease or disuse	progressive wasting of muscle tissues
any general reduction in vitality and strength of body and mind resulting from a debilitating chronic disease