Bondage

 

1: the tenure or service of a villein, serf, or slave

2: a state of being bound usually by compulsion (as of law or mastery)

3: sadomasochistic sexual practices involving the physical restraint of one partner

Ropes are the most common elements of Bondage, although adhesives(tape), bars, collars, chains (especially fine ones),  cuffs, hooks, manacles, straps, spreader bars, various gags and zipties(aka cableties) may also be used.