home away from home vs home from home

home away from home and home from home both are nouns.

Word	Noun	Adjective	Verb	Adverb
home away from home	Yes	No	No	No
home from home	Yes	No	No	No

As nouns, home away from home and home from home are synonyms defined as:

home away from home and home from home: a place where you are just as comfortable and content as if you were home

home away from home (noun)	home from home (noun)
a place where you are just as comfortable and content as if you were home	a place where you are just as comfortable and content as if you were home