Found in services in the Catholic, Orthodox and Church of England churches. There is a set structure to the service, use of set prayers and readings. Follows the text of a prayer book and is not improvised. It usually takes place in a Church.
Found in non-conformist churches. A service that does not follow a set text or ritual. It usually follows a structure but the service leader has free choice in that structure. They may choose a theme relevant to the world or community. Extemporary prayer is usually used.
Called 'meetings'. No leader or set structure. Sit in a circle around a table in silence. The table contains the Bible and a book of Quaker writings. Sometimes people speak when they feel called to share their thoughts with others.