Hames, the word that refers to the curved parts of a horse's harness, has a few synonyms that can be used to express the same concept. Some of these synonyms include collar, yoke, and hitch. Collar is the part of the harness that goes around the horse's neck, while the yoke is a piece of wood that is fitted across the horse's shoulders. Hitch is an older term that refers to the loop of a horse's harness used to attach the cart or wagon. These synonyms can be used to describe different parts of a horse's harness system, but all are used to control the horse's movement and assist in tasks such as plowing or traveling.