fictionalisation vs British spelling

fictionalisation and British spelling both are nouns.

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

fictionalisation (noun)	British spelling (noun)
writing in a fictional form	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')
a literary work based partly or wholly on fact but written as if it were fiction