demobilisation vs demobilization

demobilisation and demobilization both are nouns.

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

As nouns, demobilisation and demobilization are synonyms defined as:

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

demobilisation (noun)	demobilization (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