shake up vs shake-up

shake up is not a noun while shake-up is a noun.

Word	Noun	Adjective	Verb	Adverb
shake up	No	No	Yes	No
shake-up	Yes	No	No	No

shake up (noun)	shake-up (noun)
	the imposition of a new organization; organizing differently (often involving extensive and drastic changes)

shake up (verb)	shake-up (verb)
make fuller by shaking
change the arrangement or position of
stir the feelings, emotions, or peace of
shock physically
shake; especially (a patient to detect fluids or air in the body)
organize anew