sensitising vs Australian spelling

sensitising and Australian spelling both are nouns.

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

sensitising (noun)	Australian spelling (noun)
rendering an organism sensitive to a serum by a series of injections	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')

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