Riding a horse is an activity that has been around for centuries. It involves sitting atop a horse and guiding it with the use of reins, stirrups, and other aids. The term 'riding horse' can refer to any breed of horse used for this purpose, but the most common type is the Arabian, or ARAB, which is known for its speed and agility. Another term for riding horse is 'STEED, ' STEED, which is derived from the Old English word for horse. Lastly, the term 'MOUNT, ' MOUNT, is also used to refer to a horse that is ridden.