Bondage verses Locked up

I am learning from a fellow locked up traveler that words like "master" and "slave" are not locked up terms. Oh for sure, there is plenty of porn showing guys being locked up as part of their "punishment" or bondage. Bound Gods is a super site for caged bondage hot videos. I wish I could afford a membership, but I'll just have to enjoy the previews for now...but I digress. I imagine many men enjoy submitting to being locked up/caged and controlled by their KH. And certainly many enjoy being in control. But the line appears to be drawn by the agreement made by two men who enter a locked up/KH relationship. What also is interesting is that two caged men can be KH's to each other. What they learn from each other and the boundaries established are agreed voluntary experiences. Bondage on the other hand, gives an appearance of force. (Indeed its all acting in porn...or is it? LOL) Its a subtle distinction, but an important one, blurred by bondage porn.