mare's nest vs disorder

mare's nest and disorder both are nouns.

Word	Noun	Adjective	Verb	Adverb
mare's nest	Yes	No	No	No
disorder	Yes	No	Yes	No

As nouns, disorder is a hypernym of mare's nest; that is, disorder is a word with a broader meaning than mare's nest:

Other hypernyms of mare's nest include disorderliness.

mare's nest (noun)	disorder (noun)
a confused multitude of things	a disturbance of the peace or of public order
	a condition in which things are not in their expected places
	a physical condition in which there is a disturbance of normal functioning

mare's nest (verb)	disorder (verb)
	bring disorder to
	disturb in mind or make uneasy or cause to be worried or alarmed