midden vs muckheap

midden and muckheap both are nouns.

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

As nouns, midden and muckheap are synonyms defined as:

Other synonyms of midden include dunghill, muckhill.

midden (noun)	muckheap (noun)
a heap of dung or refuse	a heap of dung or refuse
(archeology) a mound of domestic refuse containing shells and animal bones marking the site of a prehistoric settlement