CJ, a mechanoid is a robot, which is a completely mechanical creation. It does not resemble a human, even though it might have two arms, two legs, a torso, and a head.
A Cyborg is a human who has been artificially enhanced with artificial replacement limbs and or internal organs, eyes, ears, etc.
An andriod is a synthetic being, made to resemble humans, and to function as a human, or as close to human as possible.
You might go with a form of lightweight but durable armor.
"I offer you a Vulcan prayer, Mr Suder. May your
death bring you the peace you never found in
life." - Tuvok.
