The basic key difference between wires and cables is that a wire is a single conductor whereas a cable is a group of conductors. Although, these conductors are made of a common material- copper or aluminium. Usually, the wires are bare and are twisted. But, some of the wires are coated with thin PVC layer and in case of cables, they run parallelly and are twisted or bonded together to form a single case. For the safety purpose, an inner and outer sheath is made.