visualisation vs visualization

visualisation and visualization both are nouns.

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

As nouns, visualisation and visualization are synonyms defined as:

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

Other synonyms of visualisation include visual image.

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