Synagogue
Synagogue offshoots

Since many Orthodox and some non-Orthodox Jews prefer to collect a minyan (a quorum of ten) rather than pray alone, they commonly assemble at pre-arranged times in offices, living rooms, or other spaces when these are more convenient than formal synagogue buildings. A room or building that is used this way can become a dedicated small synagogue or prayer room. Among Ashkenazi Jews they are traditionally called shtiebel (שטיבל, pl. shtiebelekh or shtiebels, Yiddish for "little house"), and are found in Orthodox communities worldwide.

Another type of communal prayer group, favored by some contemporary Jews, is the chavurah (חבורה, pl. chavurot, חבורות), or prayer fellowship. These groups meet at a regular place and time, either in a private home or in a synagogue or other institutional space. In antiquity, the Pharisees lived near each other in chavurot and dined together to ensure that none of the food was unfit for consumption.
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