categorisation vs categorization

categorisation and categorization both are nouns.

Word	Noun	Adjective	Verb	Adverb
categorisation	Yes	No	No	No
categorization	Yes	No	No	No

As nouns, categorisation and categorization are synonyms defined as:

categorisation and categorization: the act of distributing things into classes or categories of the same type

Other synonyms of categorisation include assortment, classification, compartmentalisation, compartmentalization.

As nouns, categorisation and categorization are synonyms defined as:

categorisation and categorization: the basic cognitive process of arranging into classes or categories

Other synonyms of categorisation include classification, sorting.

As nouns, categorisation and categorization are synonyms defined as:

categorisation and categorization: a group of people or things arranged by class or category

Other synonyms of categorisation include classification.

categorisation (noun)	categorization (noun)
the act of distributing things into classes or categories of the same type	the act of distributing things into classes or categories of the same type
the basic cognitive process of arranging into classes or categories	the basic cognitive process of arranging into classes or categories
a group of people or things arranged by class or category	a group of people or things arranged by class or category