poste restante vs general delivery

poste restante and general delivery both are nouns.

Word	Noun	Adjective	Verb	Adverb
poste restante	Yes	No	No	No
general delivery	Yes	No	No	No

As nouns, poste restante and general delivery are synonyms defined as:

poste restante and general delivery: the part of a post office that handles mail for persons who call for it

poste restante (noun)	general delivery (noun)
a notation written on mail that is to be held at the post office until called for (not in the United States or Canada)	the part of a post office that handles mail for persons who call for it
the part of a post office that handles mail for persons who call for it