Historical ghost is a term used to refer to the apparition or spirit of a person who died a long time ago and is often associated with historical or cultural significance. There are numerous synonyms for the term historical ghost, including spectral ancestor, phantom forebear, ethereal relic, ghostly artifact, specter of the past, and phantom time-traveler. Other related terms for historical ghost include haunted historical figure, ghost of a bygone era, and spirit of times gone by. These terms are often used to describe the presence of a historical ghost in a specific location or its appearance in literature or popular culture.