midden vs mound

midden and mound both are nouns.

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

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

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

midden (noun)	mound (noun)
a heap of dung or refuse	the position on a baseball team of the player who throws the ball for a batter to try to hit
(archeology) a mound of domestic refuse containing shells and animal bones marking the site of a prehistoric settlement	structure consisting of an artificial heap or bank usually of earth or stones
	(baseball) the slight elevation on which the pitcher stands
	a collection of objects laid on top of each other
	a small natural hill

midden (verb)	mound (verb)
	form into a rounded elevation