British spelling vs photosensitise

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

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

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

British spelling (verb)	photosensitise (verb)
	make (an organism or substance) sensitive to the influence of radiant energy and especially light