Cyborg and Mechanical man

Cyborg noun - A human being whose body has been taken over in whole or in part by electromechanical devices.

Mechanical man and cyborg are semantically related. In some cases you can use "Mechanical man" instead a noun "Cyborg".

Mechanical man noun - An automaton that resembles a human being.

Cyborg and mechanical man are semantically related. You can use "Cyborg" instead a noun phrase "Mechanical man".