Русско-англо-русский юридический словарь

A third word, depositary, is also often mixed up with depository. They are considered variants of each other in legal contexts especially,3 but depositary usually denotes people (with whom things are deposited), while depository usually denotes places. (Grammarist)

In international law, a depositary is a government or organization to which a multilateral treaty is entrusted.[1] The principal functions of a depositary are codified in Article 77 of the Vienna Convention on the Law of Treaties. (Wikipedia)

Depository. The place where a deposit is placed and kept, e.g., a bank, savings and loan institution, credit union, or trust company. A place where something is deposited or stored as for safekeeping or convenience, e.g., a safety deposit box. (West's Encyclopedia of American Law)