British spelling vs demythologisation

British spelling and demythologisation both are nouns.

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

British spelling (noun)	demythologisation (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')	the restatement of a message (as a religious one) in rational terms