sensitizer vs sensitize

sensitizer is a noun but sensitize is not a noun.

Word	Noun	Adjective	Verb	Adverb
sensitizer	Yes	No	No	No
sensitize	No	No	Yes	No

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

sensitizer (verb)	sensitize (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