The Catholic Church, which consists of 24 particular churches in full communion with the Pope as the Bishop of Rome.

Any Protestant church run independently by its own congregation, especially one in the Reformed (Calvinist) and/or Dissenter traditions, such as the United Church of Christ, the National Association of Congregational Christian Churches, or the Conservative Congregational Christian Conference.

The Eastern Orthodox Church / The Eastern body of Christendom / That part of Christendom apart from the Eastern Catholic Churches / Any Church that self-designates as Orthodox

A formalized period of communal worship, often but not exclusively occurring on Sunday, or Saturday in the case of those churches practicing Sabbatarianism.

(Catholic canon law) Any of the individual constituent hierarchically ordered ecclesial communities in full communion with Rome that are part of the Catholic Church as a whole.

plural of Church Father

(Christianity) One of a number of male Christian writers from Antiquity whose doctrinal work is considered authoritative by the later church.

a church established by or controlled by the government of a country.

(Catholicism) One of the 24 particular churches (sui juris) in full communion with the Holy See and the rest of the Catholic Church which uses the Latin liturgical rites.

(printing, historical) A tall, thin form of black-letter print.