Differences in saddles..............

I've always heard of Full Quarter horse bars on saddles and semi quarter horse bars, what's the difference?

Also, what is different about a Gaited horse saddle?

Someone correct me if I explain this wrong, but semi-QH bars are narrower than full QH bars. For example you'd use full QH bars on a horse with "no" withers and semi QH bars on horses with slightly more defined withers. I don't have the slightest clue about the gaited horse saddles.Sorry.

I am not sure but I think gaited horse saddles would be saddles that allow the gaited horses to freely move for a more fluid motion.