minimisation vs minimization

minimisation and minimization both are nouns.

Word	Noun	Adjective	Verb	Adverb
minimisation	Yes	No	No	No
minimization	Yes	No	No	No

As nouns, minimisation and minimization are synonyms defined as:

minimisation and minimization: the act of reducing something to the least possible amount or degree or position

minimisation (noun)	minimization (noun)
the act of reducing something to the least possible amount or degree or position	the act of reducing something to the least possible amount or degree or position