Most of the time when people think of horse barns, they are thinking of stables, or even loafing sheds or run in sheds. There are a few technical differences between the types of barns represented by each of these different phrases, but today, they are used synonymously in most cases. Loafing sheds, or run in sheds, are the terms commonly used for the care of any type of farm or ranch animal. Horse barns may have features specific to the needs horses. The purpose of the building will determine the what all is needed in the structure.