factorisation vs factoring

factorisation and factoring both are nouns.

Word	Noun	Adjective	Verb	Adverb
factorisation	Yes	No	No	No
factoring	Yes	No	No	No

As nouns, factorisation and factoring are synonyms defined as:

factorisation and factoring: (mathematics) the resolution of an expression into factors such that when multiplied together they give the original expression

Other synonyms of factorisation include factorization.

factorisation (noun)	factoring (noun)
(mathematics) the resolution of an expression into factors such that when multiplied together they give the original expression	(mathematics) the resolution of an expression into factors such that when multiplied together they give the original expression