midden vs cumulus

midden and cumulus both are nouns.

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

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

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

midden (noun)	cumulus (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	a globular cloud

midden (adjective)	cumulus (adjective)
	of or related to cumulous clouds