Chthonian worship is a term used to describe the belief in gods of the underworld or the earth. Some synonyms for chthonian worship include subterranean worship, underworld worship, and earth worship. Other phrases that capture the spirit of chthonian worship include subterranean devotion, earthbound worship, and earth-centric belief systems. These terms are often used to describe ancient religions that focused on deities associated with the earth and the underworld, such as the Greek god Hades and the Egyptian god Osiris. While chthonian worship is no longer a dominant religious practice, it is still relevant as a historical and cultural concept.