sterilise vs British spelling

sterilise is not a noun while British spelling is a noun.

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

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

sterilise (verb)	British spelling (verb)
make infertile
make free from bacteria