shakeup vs reorganisation

shakeup and reorganisation both are nouns.

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

As nouns, shakeup and reorganisation are synonyms defined as:

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

Other synonyms of shakeup include reorganization, shake-up.

shakeup (noun)	reorganisation (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)