sorting vs categorisation

sorting and categorisation both are nouns.

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

As nouns, sorting and categorisation are synonyms defined as:

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

Other synonyms of sorting include categorization, classification.

sorting (noun)	categorisation (noun)
grouping by class or kind or size	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
an operation that segregates items into groups according to a specified criterion	a group of people or things arranged by class or category