Elevons: As you said, elevators and ailerons on the wing combined in two rudder-surfaces and requiring a mixing. Usually no elevator in addition on the plane, but sometimes combined with canards on the front of the fuse... Typical you find this on deltaes and flying wings.

V-tail: Rudder and elevator, combined in two rudder-surfaces at the TAIL. Often you find ailerons in addition on the wings... Usually you find this on sailplanes.