hierarchisation vs British spelling

hierarchisation and British spelling both are nouns.

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

hierarchisation (noun)	British spelling (noun)
The act or result of hierarchizing; the establishment of a hierarchy.	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')