coupling

ot noun

1. Act of joining together to form a couple
2. A device that couples two things together
3. The degree of reliance between two program modules
4. A connection between two electronic circuits such that a signal can pass between them

fe’l verb

1. To join (two things) together, or (one thing) to (another). I've coupled our system to theirs.
2. To join in wedlock; to marry.
3. To join in sexual intercourse; to copulate.