monopolisation vs monopolization

monopolisation and monopolization both are nouns.

Word	Noun	Adjective	Verb	Adverb
monopolisation	Yes	No	No	No
monopolization	Yes	No	No	No

As nouns, monopolisation and monopolization are synonyms defined as:

monopolisation and monopolization: domination (of a market or commodity) to the exclusion of others

monopolisation (noun)	monopolization (noun)
domination (of a market or commodity) to the exclusion of others	domination (of a market or commodity) to the exclusion of others