self-defence vs British spelling

self-defence and British spelling both are nouns.

Word	Noun	Adjective	Verb	Adverb
self-defence	Yes	No	No	No
British spelling	Yes	No	No	No

self-defence (noun)	British spelling (noun)
the act of defending yourself	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')