portray vs portraitist

portray is not a noun while portraitist is a noun.

Word	Noun	Adjective	Verb	Adverb
portray	No	No	Yes	No
portraitist	Yes	No	No	No

portray (noun)	portraitist (noun)
	a painter or drawer of portraits

portray (verb)	portraitist (verb)
portray in words
make a portrait of
assume or act the character of
represent abstractly, for example in a painting, drawing, or sculpture