shakeup vs reorganization

shakeup and reorganization both are nouns.

Word	Noun	Adjective	Verb	Adverb
shakeup	Yes	No	No	No
reorganization	Yes	No	No	No

As nouns, shakeup and reorganization are synonyms defined as:

shakeup and reorganization: the imposition of a new organization; organizing differently (often involving extensive and drastic changes)

Other synonyms of shakeup include reorganisation, shake-up.

shakeup (noun)	reorganization (noun)
the imposition of a new organization; organizing differently (often involving extensive and drastic changes)	the imposition of a new organization; organizing differently (often involving extensive and drastic changes)
	an extensive alteration of the structure of a corporation or government