chuck out vs scrap

chuck out is not a noun while scrap is a noun.

Word	Noun	Adjective	Verb	Adverb
chuck out	No	No	Yes	No
scrap	Yes	No	Yes	No

As verbs, scrap is a hyponym of chuck out; that is, scrap is a word with a more specific, narrower meaning than chuck out:

chuck out (noun)	scrap (noun)
	the act of fighting; any contest or struggle
	a small piece of something that is left over after the rest has been used
	a small fragment of something broken off from the whole
	worthless material that is to be disposed of

chuck out (verb)	scrap (verb)
put out or expel from a place	make into scrap or refuse
throw or cast away	have a disagreement over something
	dispose of (something useless or old)