pedal
(a lever that you press with your foot to make a bicycle, car, or machine move, work, or stop)
- His feet can hardly reach the pedals of his bike.
- Press the accelerator pedal to go and brake pedal to stop.
- This sewing machine operates by a foot pedal.
paddle
(a wooden pole with a flat end, used to move and steer a small boat)
- He guided the boat through the water with a paddle.
(to move a boat forward through water with a paddle)
- She and her husband paddled a canoe down the river.