Hunter jumper isn't a discipline. Though people or horses who do both put a little slash in the middle (hunter/jumper)
Show Jumping and jumpers is, as I've always understood it, exactly the same. It's all about speed, accuracy and keeping the rails up and no refusals. Jumpers/show jumping is all about the fastest round, and the horse with the fastest time wins. Rails or refusals give you four time faults that are added on to the time that you finished the course. If you go over the maximum time allowed for the course, you get one fault for every second you go over the maximum allotted time.
Turnout is more casual, horses can wear colored pads that aren't shaped, ear bonnets, horses don't have to be braided etc etc. Riders around here wear polo, but these aren't any big competitions.
Hunters is basically about how you and your horse look. You are not timed, but it does count against you if you knock a rail. For the horse, its about how effortless the round looks, getting the correct distances, and using himself nicely over the jumps. The rider is judged on how they looks too. You are judged on how nice your equitation over fences is and in between the fences as well.
Horses and riders are also judged on turnout. How nicely the horse is groomed, and how "put together" the rider looks.
That is how I know it, but I'm sure there's someone else who can explain it better than me, I've never been "one for words" ;)
Last edited by newbhj; 08-30-2011 at 10:03 PM.