Quarter horse, thoroughbred, arabian, paint
Thoroughbred horses were bred to be race horses. They are fast indeed, but it doesnt mean they are the fastest.
You will not see a Paint horse in the Kentucky Derby. The Derby is for Thoroughbreds only. A Paint is a spotted horse with Quarter Horse and Thoroughbred bloodlines.
Traditionally, nothing - both are horses with two or more colors in patches. The American Paint Horse is a breed that has been fairly recently recognized, however - paint horses must have Quarter horse and Thoroughbred bloodlines.
I just came from a consignment shop where there was a Kentucky Derby painting by H. Hargrove.
There are appaloosa horses and American saddlebred horses, thoroughbred horses and American quarter horses, there also are more types
Thoroughbreds are from England.
welsh Shetland thoroughbred
I'm not sure if APHA accepts Thoroughbred dams or sires, but they used to. My paint had all kinds of Thoroughbred bloodlines, but they were from generations past. In the case that they DO accept them, your horse could be a registered paint. Otherwise, no dice. If he/she is colored like a paint, you can register him/her as a Pinto. They'll take anything with color. But if you're looking for something to write down on paper, I'd go with "Thoroughbred/Paint cross," honestly =)
They are both about Thoroughbred race horses, other than that they are unrelated.
No, others include quarter horses and standardbreds.
Yes, AI is widely used in breeding thoroughbred horses.