British spelling vs biodefence

British spelling and biodefence both are nouns.

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

British spelling (noun)	biodefence (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')	procedures involved in taking defensive measures against attacks using biological agents