stipple vs stippler

stipple is not a noun while stippler is a noun.

Word	Noun	Adjective	Verb	Adverb
stipple	No	No	Yes	No
stippler	Yes	No	No	No

stipple (noun)	stippler (noun)
	a painter who stipples (creates a stippled effect)

stipple (verb)	stippler (verb)
produce a mottled effect
engrave by means of dots and flicks
make by small short touches that together produce an even or softly graded shadow, as in paint or ink
apply (paint) in small dots or strokes