scrap vs rubbish

scrap and rubbish both are nouns.

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

As nouns, scrap and rubbish are synonyms defined as:

Other synonyms of scrap include trash.

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

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