Orthodox Church, Christian Churches rejecting the supremacy of the Pope, separated from the Roman Catholic Church since the 11th century East-West Schism
Protestant Church, form of Christian faith and church organization originating from the doctrines of the Protestant Reformation
National church, various Christian Churches limited in scope to a nation state
Church body, Christian religious organization made up of congregations, members, and (often) clergy
Church service, a time for communal worship, often on Sundays
In names:
Church (surname), English surname (and list of people with that name)