An archdiocese is a type of administrative division within the Catholic Church. It is headed by an archbishop and is typically larger than a diocese, which is headed by a bishop. An archdiocese is responsible for overseeing the spiritual and administrative needs of its members, including providing religious guidance, administering sacraments, and managing finances. The term 'archdiocese' comes from the Greek words 'arkhos, ' meaning 'CHIEF, ' and 'dioikesis, ' meaning 'ADMINISTRATION.'