maximisation vs maximization

maximisation and maximization both are nouns.

Word	Noun	Adjective	Verb	Adverb
maximisation	Yes	No	No	No
maximization	Yes	No	No	No

As nouns, maximisation and maximization are synonyms defined as:

maximisation and maximization: the act of raising to the highest possible point or condition or position

Other synonyms of maximisation include maximation.

maximisation (noun)	maximization (noun)
the act of raising to the highest possible point or condition or position	the act of raising to the highest possible point or condition or position
	the mathematical process of finding the maximum value of a function