demobilization vs demobilisation

demobilization and demobilisation both are nouns.

Word	Noun	Adjective	Verb	Adverb
demobilization	Yes	No	No	No
demobilisation	Yes	No	No	No

As nouns, demobilization and demobilisation are synonyms defined as:

demobilization and demobilisation: act of changing from a war basis to a peace basis including disbanding or discharging troops

demobilization (noun)	demobilisation (noun)
act of changing from a war basis to a peace basis including disbanding or discharging troops	act of changing from a war basis to a peace basis including disbanding or discharging troops