Do you know ghouls from goblins and ghosts?
late 13c., from Old French governer (11c., Modern French gouverner) "govern," from Latin gubernare "to direct, rule, guide, govern" (cf. Spanish gobernar, Italian governare), originally "to steer," a nautical borrowing from Greek kybernan "to steer or pilot a ship, direct" (the root of cybernetics). The -k- to -g- sound shift is perhaps via the medium of Etruscan. Related: Governed; governing.