midden vs cumulation

midden and cumulation both are nouns.

Word	Noun	Adjective	Verb	Adverb
midden	Yes	No	No	No
cumulation	Yes	No	No	No

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

Other hypernyms of midden include agglomerate, cumulus, heap, mound, pile.

midden (noun)	cumulation (noun)
a heap of dung or refuse	a collection of objects laid on top of each other
(archeology) a mound of domestic refuse containing shells and animal bones marking the site of a prehistoric settlement