Where does “διαφέρω” come from?

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

διαφέρω (Ancient Greek): to carry over or across, to carry from one to...