harmonise vs British spelling

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

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

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

harmonise (verb)	British spelling (verb)
bring into consonance, harmony, or accord while making music or singing
bring into consonance or accord
bring (several things) into consonance or relate harmoniously
sing or play in harmony
write a harmony for
go together