human beings vs human race

human beings and human race both are nouns.

Word	Noun	Adjective	Verb	Adverb
human beings	Yes	No	No	No
human race	Yes	No	No	No

As nouns, human beings and human race are synonyms defined as:

human beings and human race: all of the living human inhabitants of the earth

Other synonyms of human beings include humanity, humankind, humans, man, mankind, world.

human beings (noun)	human race (noun)
all of the living human inhabitants of the earth	all of the living human inhabitants of the earth