kitchen midden vs trash dump

kitchen midden and trash dump both are nouns.

Word	Noun	Adjective	Verb	Adverb
kitchen midden	Yes	No	No	No
trash dump	Yes	No	No	No

As nouns, trash dump is a hypernym of kitchen midden; that is, trash dump is a word with a broader meaning than kitchen midden:

kitchen midden: (archeology) a mound of domestic refuse containing shells and animal bones marking the site of a prehistoric settlement
trash dump: a piece of land where waste materials are dumped

Other hypernyms of kitchen midden include dump, dumpsite, garbage dump, rubbish dump, waste-yard, wasteyard.

kitchen midden (noun)	trash dump (noun)
(archeology) a mound of domestic refuse containing shells and animal bones marking the site of a prehistoric settlement	a piece of land where waste materials are dumped