retirement fund vs retirement benefit

retirement fund and retirement benefit both are nouns.

Word	Noun	Adjective	Verb	Adverb
retirement fund	Yes	No	No	No
retirement benefit	Yes	No	No	No

As nouns, retirement fund and retirement benefit are synonyms defined as:

retirement fund and retirement benefit: a monthly payment made to someone who is retired from work

Other synonyms of retirement fund include old-age pension, retirement check, retirement pension, superannuation.

retirement fund (noun)	retirement benefit (noun)
a monthly payment made to someone who is retired from work	a monthly payment made to someone who is retired from work