Paparchy refers to the governing system or authority of the Pope in the Roman Catholic Church. However, there are a few synonyms that can be used in its place. One common synonym is theocracy, which is a form of government in which divine guidance or religious beliefs dictate the policies and decisions of the ruler or leaders. Another synonym is hierarchy, which refers to a system of authority that is arranged in levels, usually with the higher levels having more power or influence than the lower ones. Autocracy is another alternative, which describes a system of government where one person has absolute power and control over the policies and decision-making processes.