A horse opera is a term used to refer to a western movie or television series. This term was first used during the 1930s and was popularized during the 1940s. Over the years, many other terms have been used to refer to this genre. Some of the synonyms for horse opera include western, cowboy movie, western drama, western adventure, and wild west movie. These terms are often used interchangeably, depending on the context and the audience. Despite the numerous synonyms available, horse opera remains a favorite among lovers of western movies and TV shows. It continues to be an enduring genre that has stood the test of time.