beat vs shake up

beat is a noun but shake up is not a noun.

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

As verbs, shake up is a hypernym of beat; that is, shake up is a word with a broader meaning than beat:

Other hypernyms of beat include agitate, commove, disturb, raise up, stir up, vex.

beat (noun)	shake up (noun)
the act of beating to windward; sailing as close as possible to the direction from which the wind is blowing
a stroke or blow
a regular rate of repetition
the basic rhythmic unit in a piece of music
(prosody) the accent in a metrical foot of verse
the rhythmic contraction and expansion of the arteries with each beat of the heart
the sound of stroke or blow
a regular route for a sentry or policeman
a member of the beat generation; a nonconformist in dress and behavior
a single pulsation of an oscillation produced by adding two waves of different frequencies; has a frequency equal to the difference between the two oscillations

beat (adjective)	shake up (adjective)
very tired

beat (verb)	shake up (verb)
wear out completely	make fuller by shaking
be a mystery or bewildering to	change the arrangement or position of
come out better in a competition, race, or conflict	stir the feelings, emotions, or peace of
beat through cleverness and wit	shock physically
hit repeatedly	shake; especially (a patient to detect fluids or air in the body)
give a beating to; subject to a beating, either as a punishment or as an act of aggression	organize anew
stir vigorously
strike (a part of one's own body) repeatedly, as in great emotion or in accompaniment to music
strike (water or bushes) repeatedly to rouse animals for hunting
shape by beating
make by pounding or trampling
produce a rhythm by striking repeatedly
move rhythmically
sail with much tacking or with difficulty
move with a flapping motion
indicate by beating, as with the fingers or drumsticks
move with a thrashing motion
move with or as if with a regular alternating motion
make a rhythmic sound
make a sound like a clock or a timer
glare or strike with great intensity
avoid paying
be superior