waste product vs refuse

waste product and refuse both are nouns.

Word	Noun	Adjective	Verb	Adverb
waste product	Yes	No	No	No
refuse	Yes	No	Yes	No

As nouns, refuse is a hyponym of waste product; that is, refuse is a word with a more specific, narrower meaning than waste product:

waste product (noun)	refuse (noun)
any materials unused and rejected as worthless or unwanted	food that is discarded (as from a kitchen)

waste product (verb)	refuse (verb)
	show unwillingness towards
	not accept as true
	refuse to let have
	refuse entrance or membership
	elude, especially in a baffling way
	resist immunologically the introduction of some foreign tissue or organ