limner vs portraitist

limner and portraitist both are nouns.

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

As nouns, limner and portraitist are synonyms defined as:

Other synonyms of limner include portrait painter, portrayer.

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