British spelling vs opsonisation

British spelling and opsonisation both are nouns.

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

British spelling (noun)	opsonisation (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')	process whereby opsonins make an invading microorganism more susceptible to phagocytosis