British spelling vs demineralisation

British spelling and demineralisation both are nouns.

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

British spelling (noun)	demineralisation (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')	the removal of minerals and mineral salts from a liquid (especially from water)
	abnormal loss of mineral salts (especially from bone)