The term "church hierarchy" refers to the system of authority within a religious organization. To describe this structure, there are numerous synonyms available. These include "ecclesiastical hierarchy," "clergy hierarchy," or simply "religious hierarchy." Additionally, one could use the phrase "church leadership" or "religious leadership" to describe those in positions of power within a given organization. Other possible synonyms for "church hierarchy" might include "hierarchical structure," "religious order," or "clerical hierarchy." Each of these phrases conveys the idea of a system of authority that exists within a religious institution.