Mpnks, from the Greek word, "alone" can be lay or ordained and devoted to organized prayer, some manual work, study and contemplation. despite the name, they live in community, some who live alone are called "hermits" but usually join the community for special events. "Nun" is technically the word applied to females involved in such activity: they live in Abbeys, Monasteries. "nun" in the popular sense is a woman bound by special vows or promises to live the Christian life as part of a community, that is not a Monastery, Abbey. Cardinal, literally'hinge' is part of the Pope's inner Council of advisers, and is both a parish priest of the City of Rome, with a church there of which he is technically parish proest, is uusally the resident Bishop of a large city such as Boston, MA, Lima, Peru. he can be a theologian such as Jesuit Professor od Theology Fr. Avery Dulles of MA, son of John Foster Dulles, US political figure. The largest cities have "arch' that is "first' dioceses ( a division of the Church,an old Roman Empire word) dioceses are in small cities. A "Monsignor" is an honorary title given to certain priests by the Pope through his bishop's nomination, but is the Italian, Spanish, French word and title for bishops! The bishop,an Anglo-saxon word, is from the biblical "epi-scopus (Greek) overseer (from which we get episcopal)and is chief pastor over a "diocese" ( which normally includes a larger city and several counties in the US) which include sereral parishes, which have "pastors" or parish priests.