assail vs rubbish

assail is not a noun while rubbish is a noun.

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

As verbs, rubbish is a hyponym of assail; that is, rubbish is a word with a more specific, narrower meaning than assail:

Other hyponyms of assail include abuse, blackguard, clapperclaw, shout, claw, vitriol, rip, whang, barrage, bombard, blister, scald, scorch, whip.

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

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