realistic vs realist

realistic is not a noun while realist is a noun.

Word	Noun	Adjective	Verb	Adverb
realistic	No	Yes	No	No
realist	Yes	No	No	No

realistic (noun)	realist (noun)
	a philosopher who believes that universals are real and exist independently of anyone thinking of them
	a painter who represents the world realistically and not in an idealized or romantic style
	a person who accepts the world as it literally is and deals with it accordingly

realistic (adjective)	realist (adjective)
aware or expressing awareness of things as they really are
of or relating to the philosophical doctrine of realism
representing what is real; not abstract or ideal