Guided missile and Robot bomb

Guided missile noun - A rocket-propelled missile whose path can be controlled during flight either by radio signals or by internal homing devices.

Robot bomb and guided missile are semantically related. In some cases you can replace phrase "Robot bomb" with "Guided missile", this phrases are similar.

Robot bomb noun - A small jet-propelled winged missile that carries a bomb.

Guided missile and robot bomb are semantically related. You can use "Guided missile" instead a noun phrase "Robot bomb".