Section 2(10)(a) in The Greater Noida Industrial Development Area Building Regulations, 1992
(a)"Assembly building" refers to a building or part of a building where group of people congregate or gather for amusement, recreation, social, religious, patriotic and similar purposes and includes theatres, assembly halls, auditoria, exhibition halls, museum, skating rinks, gymnasium, dance hall, club rooms, recreation piers and stadia.