El Cid is a legendary figure in Spanish history who has inspired countless stories, plays, and films. As a result, there are several synonyms for the name "El Cid" that can be used to refer to this iconic character. One common synonym is "Rodrigo Diaz," which is El Cid's given name. Another synonym is "El Campeador," which means "the champion" in Spanish. Additionally, El Cid is sometimes referred to as "El Heroe de Vivar," which means "the hero of Vivar," the region where he was born. Overall, these synonyms help to capture the enduring legacy of this great hero and warrior in Spanish history and culture.