Wire
A single strand of metal capable of transmitting power or data from one side of the wire to the other. These wires are almost always protected in a plastic covering that is sometimes color coded to help identify each wire on each end of a cable.
In the picture to the right, is an example of a CAT5
cable stripped with the wires exposed. As can be seen from this example, a cable is generally composed of multiple wires.
Also see: Electronics definitions, Wire strippers