familiarisation vs British spelling

familiarisation and British spelling both are nouns.

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

familiarisation (noun)	British spelling (noun)
the experience of becoming familiar with something	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')