reality vs real world

reality and real world both are nouns.

Word	Noun	Adjective	Verb	Adverb
reality	Yes	No	No	No
real world	Yes	No	No	No

As nouns, real world is a hyponym of reality; that is, real world is a word with a more specific, narrower meaning than reality:

Other hyponyms of reality include real life.

reality (noun)	real world (noun)
the quality possessed by something that is real	the practical world as opposed to the academic world
all of your experiences that determine how things appear to you
the state of being actual or real
the state of the world as it really is rather than as you might want it to be