Plugs are typically used to connect portable electrical devices, such as lamps and appliances, to a power source. They can come in a variety of shapes and sizes and are designed to mate with a specific type of receptacle or outlet.

Connectors are components used to join two or more electrical conductors or wires. They can be used in a wide range of applications, from simple splices to complex multi-pin connectors used in industrial and commercial settings.

Adapters are devices used to convert one type of plug or connector to another. They can be used to adapt electrical devices to different types of power sources, or to allow devices designed for one type of electrical system to be used in another.