"Erreka"-ren itzulpena ingelesa-era

body of water with a current, confined within a bed and stream banks, bigger than a ditch but smaller than a river

bidaso

A small stream or rivulet, commonly swiftly flowing in rugged terrain, of lesser length and volume than a creek; especially a stream that issues directly from the ground, as from a spring or seep, or that is produced by heavy rainfall or melting snow.