expressionism vs expressionist

expressionism and expressionist both are nouns.

Word	Noun	Adjective	Verb	Adverb
expressionism	Yes	No	No	No
expressionist	Yes	Yes	No	No

expressionism (noun)	expressionist (noun)
an art movement early in the 20th century; the artist's subjective expression of inner experiences was emphasized; an inner feeling was expressed through a distorted rendition of reality	an artist who is an adherent of expressionism

expressionism (adjective)	expressionist (adjective)
	of or relating to expressionism