Rear rotor and Tail rotor

Tail rotor and rear rotor are semantically related. In some cases you can replace phrase "Tail rotor" with "Rear rotor", this phrases are similar.

Tail rotor noun - Rotor consisting of a rotating airfoil on the tail of a single-rotor helicopter; keeps the helicopter from spinning in the direction opposite to the rotation of the main rotor.

Rear rotor and tail rotor are semantically related. Sometimes you can replace phrase "Rear rotor" with "Tail rotor", this phrases are similar.