British spelling vs BW defence

British spelling and BW defence both are nouns.

Word	Noun	Adjective	Verb	Adverb
British spelling	Yes	No	No	No
BW defence	Yes	No	No	No

British spelling (noun)	BW defence (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')	defense against biological warfare