Where does “żôga” come from?

żôga (Kashubian) comes from German Säge, from Middle High German sage, from Old High German saga, from Proto-West Germanic sagā, from Proto-Germanic sagǭ, from Proto-Indo-European sekʷe-, from Proto-Indo-European sekʷ- — to follow; to see; to say.

żôga (Kashubian): saw, file