British spelling vs quantisation

British spelling and quantisation both are nouns.

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

British spelling (noun)	quantisation (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')	the act of dividing into quanta or expressing in terms of quantum theory