racist vs racism

racist and racism both are nouns.

Word	Noun	Adjective	Verb	Adverb
racist	Yes	Yes	No	No
racism	Yes	No	No	No

racist (noun)	racism (noun)
a person with a prejudiced belief that one racial group is superior to others	discriminatory or abusive behavior towards members of another race
	the prejudice that members of one race are intrinsically superior to members of other races

racist (adjective)	racism (adjective)
discriminatory especially on the basis of race or religion
based on racial intolerance