British spelling vs factorisation

British spelling and factorisation both are nouns.

Word	Noun	Adjective	Verb	Adverb
British spelling	Yes	No	No	No
factorisation	Yes	No	No	No

British spelling (noun)	factorisation (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')	(mathematics) the resolution of an expression into factors such that when multiplied together they give the original expression