decimalisation vs decimalization

decimalisation and decimalization both are nouns.

Word	Noun	Adjective	Verb	Adverb
decimalisation	Yes	No	No	No
decimalization	Yes	No	No	No

As nouns, decimalisation and decimalization are synonyms defined as:

decimalisation and decimalization: the act of changing to a decimal system

decimalisation (noun)	decimalization (noun)
the act of changing to a decimal system	the act of changing to a decimal system