Wireless power transfer refers to the process of transmitting power or energy from one device to another without the need for wires. Other synonyms for this term include wireless charging, wireless energy transfer, and wireless electricity delivery. Inductive charging, resonant induction, and magnetic resonance are also terms used to describe wireless power transfer. Contactless charging and cordless electricity are also used to describe the same technology. These synonyms are often used interchangeably to describe the same concept of wire-free power transmission, making it possible to charge devices and power equipment without the need for cords or cables.