real life vs real world

real life and real world both are nouns.

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

As nouns, real life and real world are synonyms defined as:

real life and real world: the practical world as opposed to the academic world

real life (noun)	real world (noun)
the practical world as opposed to the academic world	the practical world as opposed to the academic world