ngêk (Kayapó) comes from Proto-Finno-Ugric kure, from Arabic كره, from Arabic كُرَة, from Old Persian 𐎹𐎢𐎴, from Ancient Greek Ἴων, from Ancient Greek Ἰᾱ́ϝων — Ionian.
ngêk (Kayapó): pain, to hurt, sour