trash dump vs dumpsite

trash dump and dumpsite both are nouns.

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

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

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

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

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