sensitising vs British spelling

sensitising and British spelling both are nouns.

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

sensitising (noun)	British spelling (noun)
rendering an organism sensitive to a serum by a series of injections	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')

sensitising (adjective)	British spelling (adjective)
making susceptible or sensitive to either physical or emotional stimuli