rubbish vs debris

rubbish and debris both are nouns.

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

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

Other hyponyms of rubbish include scrap metal, detritus, dust, junk, rubble, litter.

rubbish (noun)	debris (noun)
nonsensical talk or writing	the remains of something that has been destroyed or broken up
worthless material that is to be disposed of

rubbish (verb)	debris (verb)
attack strongly