Roman Catholic priest

The ministerial orders of the Roman Catholic Church (for not-Roman Catholic but the several Eastern Catholic Churches: see overthere) are those of bishop, presbyter (more commonly called priest in English), and deacon. The ordained priesthood and the common priesthood (or priesthood of all the baptized faithful) are different in function and essence. The Catholic Church teaches that when a man participates in priesthood, he participates in the priesthood of Christ Himself. All men who, through the Sacrament of Holy Orders, have become priests participate in Christ's priesthood; they act in persona Christi Capitis, in the person of Christ, the Head of His Body, the Church.

Unlike usage in English, "the Latin words sacerdos and sacerdotium are used to refer in general to the ministerial priesthood shared by bishops and presbyters. The words presbyter, presbyterium and presbyteratus refer to priests in the English use of the word or presbyters." According to the Annuario Pontificio 2016, as of December 31, 2014, there were 415,792 Catholic priests worldwide, including both diocesan priests and priests in the religious orders. A priest of the regular clergy is commonly addressed with the title "Father" (abbreviated Fr., in the Roman Catholic and some other Christian churches).

The state of consecrated life or monasticism is a separate, third distinct vocational state from the clergy and the laity. As an overview, there are the members of the laity- who are married or unmarried, and the clergy- the bishops, priests, and deacons. Deacons are male and usually belong to the diocesan clergy, but, unlike almost all Latin-rite (Western Catholic) priests and all bishops from Eastern or Western Catholicism, they may marry as laymen before their ordination as clergy.

...
Wikipedia