Rudders and stabilizers are used in aircraft. The rudder is attached to the vertical stabilizer. Controlled by the rudder pedals, the rudder is used by the pilot to control the direction of yaw.
When the foot pressure on the left rudder pedal moves the rudder to the left, causing the nose of the airplane to move to the left. When the foot pressure on the right rudder pedal moves the rudder to the right, causing the nose of the airplane to move to the right.