codswallop vs rubbish

codswallop and rubbish both are nouns.

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

As nouns, codswallop and rubbish are synonyms defined as:

Other synonyms of codswallop include applesauce, folderol, trash, tripe, trumpery, wish-wash.

codswallop (noun)	rubbish (noun)
nonsensical talk or writing	nonsensical talk or writing
	worthless material that is to be disposed of

codswallop (verb)	rubbish (verb)
	attack strongly