Clergy

Right of Canon: whoever commits real violence on the person of a clergyman, commits a sacrilege . This decree was issued in a Lateran Council of 1097 (requested by Pope Urban II ), then renewed in the Lateran Council II (1139).
Right of Forum: by this right clergy may be judged by ecclesiastical tribunal s only. Emperor Constantine I granted this right for bishops, which was subsequently extended to the rest of the clergy by Imperial Decree.
Right of Immunity: clergy cannot be called for military service or for duties or charges not compatible with his role.
Right of Competence: a certain part of the income of clergy, necessary for sustenance, cannot be sequestered by any action of creditors.

Clergy is the generic term used to describe the formal religious leadership within a given religion. The term comes from Greek κληρος (a lot, that which is assigned by lot (allotment) or metaphorically, heritage).