sensitise vs Australian spelling

sensitise is not a noun while Australian spelling is a noun.

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

sensitise (noun)	Australian spelling (noun)
	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')

sensitise (verb)	Australian spelling (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