dumpsite vs trash dump

dumpsite and trash dump both are nouns.

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

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

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

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

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