humans vs human race

humans and human race both are nouns.

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

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

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

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