slough vs throw away

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

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

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

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

slough (noun)	throw away (noun)
any outer covering that can be shed or cast off (such as the cast-off skin of a snake)
necrotic tissue; a mortified or gangrenous part or mass
a stagnant swamp (especially as part of a bayou)
a hollow filled with mud

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