I'm not a western rider, but I am interested in perhaps riding western one day. I've never heard of any of those three things, except I believe that cinches are the western equivalent to girths.
I also hear things about using two girths... or a back strap or something. I'm unsure... anyways, what are the differences and what do you use each one for?
Side question: why do headstalls have one or two loops to go around the ears? I've been wondering about that. Are certain headstalls for certain disciplines?