A cable is a group of wires bundled together and often enclosed within a single jacket, typically for transmitting signals or power between points. A wire harness is an engineered assembly arranging multiple cables and wires, with connectors, terminations, protective sleeving, and labeling, routed and secured for a specific installation. Wire harnesses are customized for shape, routing, and environment, focusing on organization, protection, and ease of maintenance in complex systems.