reorganisation vs shakeup

reorganisation and shakeup both are nouns.

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

As nouns, reorganisation and shakeup are synonyms defined as:

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

Other synonyms of reorganisation include reorganization, shake-up.

reorganisation (noun)	shakeup (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)