memorisation vs British spelling

memorisation and British spelling both are nouns.

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

memorisation (noun)	British spelling (noun)
learning so as to be able to remember verbatim	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')