All 3 Uses

clergy
in
The Power and the Glory, by Graham Greene by Greene
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He had a sort of contempt for the lower clergy, and right up to the last he was explaining his rank.†
Chpt 1.2 *
There had been a conference once of the parochial clergy in the capital, in the happy days of the old governor, and he could remember Padre Jose slinking in at the tail of every meeting, curled up half out of sight in a back row, never opening his mouth.†
Chpt 2.1
It hadn't been necessary: none of the busy cathedral clergy even knew what he was called.†
Chpt 2.2

Definitions:

(1) (clergy)
formal religious leaders (typically in Christianity)

Clergy is typically used in reference to Christian churches; however, clerics (members of the clergy) are referred to in different ways for different denominations. A Catholic priest is the equivalent of a Protestant minister. A pastor is any Christian cleric in charge of a congregation or parish. The clergy is distinguished from the laity.
(2) (meaning too rare to warrant focus)