The verb congregate may be used for spontaneous gatherings. A crowd quickly congregates at the scene of an accident, for example, just as cows, sheep, or horses tend to congregate during a storm. And under military rule, citizens are often forbidden to congregate on street corners or anywhere else. But a congregation is generally a group that has gathered for a formal purpose, usually in church. The Congregational Church was originally the church of the Puritan settlers, in which each congregation governed its own church independent of any higher authority.