racial discrimination vs racism

racial discrimination and racism both are nouns.

Word	Noun	Adjective	Verb	Adverb
racial discrimination	Yes	No	No	No
racism	Yes	No	No	No

As nouns, racial discrimination and racism are synonyms defined as:

racial discrimination and racism: discriminatory or abusive behavior towards members of another race

Other synonyms of racial discrimination include racialism.

racial discrimination (noun)	racism (noun)
discriminatory or abusive behavior towards members of another race	discriminatory or abusive behavior towards members of another race
	the prejudice that members of one race are intrinsically superior to members of other races