A cable is a hub composed of electrical conductors such as copper wire, aluminum wire, etc. They are usually wrapped in insulating materials (as plastic, rubber, etc.) and outer protective layers (as metal woven fabrics, plastic, rubber, etc.) to provide protection and isolation.

A wire harness, also known as a bundle of wires or cables, is a whole composed of multiple wires and cables that are woven, tied, sheathed, or otherwise assembled. Wiring harnesses are commonly used in various types of machinery and equipment, automobiles, airplanes, ships, and other fields. They can be seen as a process of connecting wires and cables into a whole.

Connector is a medium that connects two or more objects together. Connectors can be hardware, such as sockets, phone sockets, and so on that we see in our daily lives.