Coupler
Part of speech: noun
Definition: Someone who couples things together, especially someone whose job it is to couple railway carriages. Anything that serves to couple things together; but especially a device that couples railway carriages. A device that connects two keyboards of an organ together so that they play together. A device used to convert electronic information into audible sound signals for transmission over telephone lines. An electrical device used to transfer energy from one electric device to another, especially without a physical connection.
Coupling
Part of speech: noun
Definition: the act of joining together to form a couplea device that couples two things togethersexual intercoursea connection between two electronic circuits such that a signal can pass between themThe property of physical systems that they are interacting with each other.