Due to recent discussions about implications of kind "shibari is bondage, bondage is bdsm", I understood that there are lots of people here who think that they know or that they understand what BDSM is, what bondage, and, possibly not being part of any of it, imply that those things are same , due to lack of knowledge or due prudish or stereotypic environment they live in.
In fact, those three do not imply each other, as well neither of them doesn't imply sex or romance in any form.
I tried to simplify it but was only called a moron. But some of my peers offered me to link this article which does the best and shortest explanation what BDSM nature is.
http://dominantguide.com/676/bdsm-does-not-equal-sex-does-not-equal-love-automatically/
Here is one about shibari:
http://www.artofcontemporaryshibari.com/?page_id=29
SO.. technically, shibari is art, study of body, even public exhibition. BDSM is study of each other, or yourself, exploration of personality. While bondage is comfort fetish, just like collar plays (which do not implay anything BDSM related).
BDSM might be role-played during intercourses, but in those cases it's role-play, it's not actual BDSM. It might be used as foreplay, but not necessary.
Shibari is kind of bondage which is too complex or too impractical to be used full-scale in intercourse, it's not designed to. Shibari is art ofcreating picture from rope and body, bondage elements also sometimes used for that.
Updated by TonyCoon