sensitise vs sensitiser

sensitise is not a noun while sensitiser is a noun.

Word	Noun	Adjective	Verb	Adverb
sensitise	No	No	Yes	No
sensitiser	Yes	No	No	No

sensitise (noun)	sensitiser (noun)
	(chemistry) a substance other than a catalyst that facilitates the start of a catalytic reaction

sensitise (verb)	sensitiser (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