rubbish dump vs trash dump

rubbish dump and trash dump both are nouns.

Word	Noun	Adjective	Verb	Adverb
rubbish dump	Yes	No	No	No
trash dump	Yes	No	No	No

As nouns, rubbish dump and trash dump are synonyms defined as:

rubbish dump and trash dump: a piece of land where waste materials are dumped

Other synonyms of rubbish dump include dump, dumpsite, garbage dump, waste-yard, wasteyard.

rubbish dump (noun)	trash dump (noun)
a piece of land where waste materials are dumped	a piece of land where waste materials are dumped