Somethings about BD/SM

I have chated with some kinds of people here.
Cause its a Pron site, some many people dont put on the "mask" as their usually look like, and become more real here. Its funny.
So many women and men are seeking the relationship just like one night real fk, BDSM, or just webcam and so on. But i do have found that most of them mix the relationship BD/SM up.
Its wrong, the relation about B/D is so many diferent from S/M, but only few people here can understand.
Maybe you can tell the diference from the name"B/D","S/M":
B/D=submission/dominace
S/M=sadism/masochism
In some sense,some kinds of performing between BD/SM are the same,just like anal sex, rough sex, doggy style, licking, SP, DP and so on. But the core of BD and SM is very different.
The relationship between B/D put more emphasis on spiritual joviality of cause which through some specified SM activities.
The relationship between S/M put more emphasis on physical joviality which can make the sex behaviors more excited.