rubbish vs assail

rubbish is a noun but assail is not a noun.

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

As verbs, assail is a hypernym of rubbish; that is, assail is a word with a broader meaning than rubbish:

Other hypernyms of rubbish include assault, attack, lash out, round, snipe.

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

rubbish (verb)	assail (verb)
attack strongly	attack in speech or writing
	attack someone physically or emotionally
	launch an attack or assault on; begin hostilities or start warfare with