genocide vs race murder

genocide and race murder both are nouns.

Word	Noun	Adjective	Verb	Adverb
genocide	Yes	No	No	No
race murder	Yes	No	No	No

As nouns, genocide and race murder are synonyms defined as:

genocide and race murder: systematic killing of a racial or cultural group

Other synonyms of genocide include racial extermination.

genocide (noun)	race murder (noun)
systematic killing of a racial or cultural group	systematic killing of a racial or cultural group