kitchen midden vs waste-yard

kitchen midden and waste-yard both are nouns.

Word	Noun	Adjective	Verb	Adverb
kitchen midden	Yes	No	No	No
waste-yard	Yes	No	No	No

As nouns, waste-yard is a hypernym of kitchen midden; that is, waste-yard 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
waste-yard: a piece of land where waste materials are dumped

Other hypernyms of kitchen midden include dump, dumpsite, garbage dump, rubbish dump, trash dump, wasteyard.

kitchen midden (noun)	waste-yard (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