British spelling vs destabilise

British spelling is a noun but destabilise is not a noun.

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

British spelling (noun)	destabilise (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')

British spelling (verb)	destabilise (verb)
	make unstable
	become unstable