"Equus Caballus" is the scientific name for the domestic horse. However, there are several synonyms for the term that are often used in everyday language. One such synonym is simply "horse," which is commonly used to describe any member of the Equidae family. Another synonym is "steed," which is often used to describe a horse that is bred or trained for riding or racing. Other synonyms for "Equus Caballus" include "nag," "stallion," "mare," "gelding," "pony," and "colt." Each of these terms may be used to describe a specific type of horse, or simply used interchangeably to refer to any member of the equine family.