mouse's nest vs nest

mouse's nest and nest both are nouns.

Word	Noun	Adjective	Verb	Adverb
mouse's nest	Yes	No	No	No
nest	Yes	No	Yes	No

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

mouse's nest (noun)	nest (noun)
where mice bear and raise their young	a kind of gun emplacement
	furniture pieces made to fit close together
	a gang of people (criminals or spies or terrorists) assembled in one locality
	a cosy or secluded retreat
	a structure in which animals lay eggs or give birth to their young

mouse's nest (verb)	nest (verb)
	fit together or fit inside
	gather nests
	move or arrange oneself in a comfortable and cozy position
	inhabit a nest, usually after building