A horse show is an event where horses and their riders compete in various disciplines such as dressage, show jumping, and cross-country. The term HORSE SHOW can be broken down into three words: RODEO (5 letters), MRED (4 letters), and OATER (5 letters). RODEO is a competitive sport involving riding and roping skills, while MRED stands for 'Most Responsible Equine Discipline' and is a type of horse show that focuses on the horse's performance. OATER is a term used to describe a western-style horse show, which includes events such as barrel racing and pole bending.