moult vs throw away

moult is a noun but throw away is not a noun.

Word	Noun	Adjective	Verb	Adverb
moult	Yes	No	Yes	No
throw away	No	No	Yes	No

As verbs, throw away is a hypernym of moult; that is, throw away is a word with a broader meaning than moult:

Other hypernyms of moult include cast, cast off, drop, shake off, shed, throw, throw off.

moult (noun)	throw away (noun)
periodic shedding of the cuticle in arthropods or the outer skin in reptiles

moult (verb)	throw away (verb)
cast off hair, skin, horn, or feathers	to remove
	throw or cast away