visualization vs visualisation

visualization and visualisation both are nouns.

Word	Noun	Adjective	Verb	Adverb
visualization	Yes	No	No	No
visualisation	Yes	No	No	No

As nouns, visualization and visualisation are synonyms defined as:

visualization and visualisation: a mental image that is similar to a visual perception

Other synonyms of visualization include visual image.

visualization (noun)	visualisation (noun)
a mental image that is similar to a visual perception	a mental image that is similar to a visual perception