shake up vs stimulate

shake up and stimulate both are verbs.

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

As verbs, shake up and stimulate are synonyms defined as:

Other synonyms of shake up include excite, shake, stir.

shake up (verb)	stimulate (verb)
make fuller by shaking	cause to be alert and energetic
change the arrangement or position of	act as a stimulant
stir the feelings, emotions, or peace of	provide the needed stimulus for
shock physically	cause to do; cause to act in a specified manner
shake; especially (a patient to detect fluids or air in the body)	cause to occur rapidly
organize anew	stir the feelings, emotions, or peace of
	stir feelings in