noun

1. The act of congregating or collecting together.

2. A gathering of faithful in a temple, church, synagogue, mosque or other place of worship. It can also refer to the people who are present at a devotional service in the building, particularly in contrast to the pastor, minister, imam, rabbi etc. and/or choir, who may be seated apart from the general congregation or lead the service (notably in responsory form).

3. A Roman Congregation, a main department of the Vatican administration of the Catholic Church.