Page "Clergy" Paragraph 15

Types of clerics are distinguished from offices, even when the latter are commonly or exclusively occupied by clerics.

A Roman Catholic cardinal, for instance, is almost without exception a cleric, but a cardinal is not a type of cleric.

An archbishop is not a distinct type of cleric, but is simply a bishop who occupies a particular position with special authority.

Conversely, a youth minister at a parish may or may not be a cleric.

Different churches have different systems of clergy, though churches with similar polity have similar systems.