rubble vs scrap

rubble and scrap both are nouns.

Word	Noun	Adjective	Verb	Adverb
rubble	Yes	No	No	No
scrap	Yes	No	Yes	No

As nouns, scrap is a hypernym of rubble; that is, scrap is a word with a broader meaning than rubble:

Other hypernyms of rubble include rubbish, trash.

rubble (noun)	scrap (noun)
the remains of something that has been destroyed or broken up	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

rubble (verb)	scrap (verb)
	make into scrap or refuse
	have a disagreement over something
	dispose of (something useless or old)