discriminatory vs racist

discriminatory is not a noun while racist is a noun.

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

discriminatory (noun)	racist (noun)
	a person with a prejudiced belief that one racial group is superior to others

discriminatory (adjective)	racist (adjective)
being biased or having a belief or attitude formed beforehand	discriminatory especially on the basis of race or religion
manifesting partiality	based on racial intolerance
capable of making fine distinctions
containing or implying a slight or showing prejudice