A senior bishop who is in charge of an archdiocese, and presides over a group of dioceses called a province (in Catholicism, Eastern Orthodoxy, Anglicanism, etc.)
A cleric; someone (such as a priest) who administers a church (ecclesia) or other religious gathering/group.
A member of the Athenian ecclesia (public legislative assembly).
A member of any ecclesia (church or other assembly).