A Socket is an electrical device that allows appliances to be connected to the main power supply. It serves as the interface between electrical plugs and the power grid, providing a safe way to access electricity for everyday devices. Sockets come in various designs and are typically region-specific, following different standards for voltage, frequency, and plug shape.

A Travelling Adaptor is a compact and portable device that enables the use of electrical appliances with different types of sockets when traveling to regions with incompatible plug systems. It acts as a bridge between the foreign socket and the device's plug, allowing travelers to power their electronics in different countries. Some adaptors also include built-in voltage converters or USB ports for added convenience.