Where does Spanking fit?

[Kyra]

Ok I've read everyones comments and they make sence.

However now wondering myself. Where does Master/Mistriss and slave fit in. I assumed that is part of BDSM but it is not in the genral names and everytime I look its is not listed under the same thing. I think what I find difficult is finding slave themes with spanking. Incredibly hard alot of the stuff is just hardcore BDSM with people doing things that are a bit much for me.