garbage dump vs waste-yard

garbage dump and waste-yard both are nouns.

Word	Noun	Adjective	Verb	Adverb
garbage dump	Yes	No	No	No
waste-yard	Yes	No	No	No

As nouns, garbage dump and waste-yard are synonyms defined as:

garbage dump and waste-yard: a piece of land where waste materials are dumped

Other synonyms of garbage dump include dump, dumpsite, rubbish dump, trash dump, wasteyard.

garbage dump (noun)	waste-yard (noun)
a piece of land where waste materials are dumped	a piece of land where waste materials are dumped