British spelling vs sensitise

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

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

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

British spelling (verb)	sensitise (verb)
	make sensitive or aware
	make (a material) sensitive to light, often of a particular colour, by coating it with a photographic emulsion
	make sensitive to a drug or allergen
	cause to sense; make sensitive