stigmatist vs stigmatism

stigmatist and stigmatism both are nouns.

Word	Noun	Adjective	Verb	Adverb
stigmatist	Yes	No	No	No
stigmatism	Yes	No	No	No

stigmatist (noun)	stigmatism (noun)
a person whose body is marked by religious stigmata (such as marks resembling the wounds of the crucified Christ)	normal eyesight
	(optics) condition of an optical system (as a lens) in which light rays from a single point converge in a single focal point
	the condition of having or being marked by stigmata