rubble vs debris

rubble and debris both are nouns.

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

As nouns, rubble and debris are synonyms defined as:

rubble and debris: the remains of something that has been destroyed or broken up

Other synonyms of rubble include detritus, dust, junk.

rubble (noun)	debris (noun)
the remains of something that has been destroyed or broken up	the remains of something that has been destroyed or broken up