potlatch → τελετή ανταλλαγής δώρων
A potlatch is a gift-giving feast practiced by Indigenous peoples of the Pacific Northwest Coast of Canada and the United States, among whom it is traditionally the primary governmental institution, legislative body, and economic system. This includes the Heiltsuk, Haida, Nuxalk, Tlingit, Makah, Tsimshian, Nuu-chah-nulth, Kwakwaka'wakw, and Coast Salish cultures. Potlatches are also a common feature of the peoples of the Interior and of the Subarctic adjoining the Northwest Coast, although mostly without the elaborate ritual and gift-giving economy of the coastal peoples (see Athabaskan potlatch).
Potlatch - Wikipedia