Where does “διαφέρω” come from?

διαφέρω (Greek) comes from Ancient Greek διαφέρω, from Ancient Greek φέρω, from Proto-Hellenic pʰérō, from Proto-Indo-European bʰéreti, from Proto-Indo-European bʰēr- — shiny, light brown.

διαφέρω (Greek): differ, be different, vary