Control surface and Tailplane

Control surface noun - A device that provides reactive force when in motion relative to the surrounding air; can lift or control a plane in flight.

Tailplane and control surface are semantically related. In some cases you can replace term "Tailplane" with "Control surface", this terms are similar.

Tailplane noun - The horizontal airfoil of an aircraft's tail assembly that is fixed and to which the elevator is hinged.

Control surface and tailplane are semantically related. You can use "Control surface" instead a noun "Tailplane".