lodge, pit, orchestra, movie house, assembly hall, orchestra circle, odeum, mezzanine, concert hall, chapel, stalls, proscenium, parquet, top gallery, balcony, dress circle, music hall, lecture hall, playhouse, tiers, reception hall, boxes, assembly room, opera house
arena (part of speech: noun)
hall, pen, amphitheater, precinct, ground, stage, courtyard, circus, bailiwick, dominion, hippodrome, domain, field, gallery, room, region, enclosure, campus, turf, theater, Colosseum, area, setting, arena, battlefield, battle-ground, ring, gymnasium, realm, circuit, circle, locale, beat, province
- When she had looked for a moment into the auditorium, of which she could see only a very small part, she turned toward her escort, who returned her glance, sighed, and said nothing. - "San-Cravate; or, The Messengers; Little Streams", Charles Paul de Kock.
- A cry of " Lincoln" comes through the auditorium. - "Abraham Lincoln", John Drinkwater.
- Across the front was a vestibule, with two flights of stairs leading up to the auditorium; behind the vestibule a large, low room, with two rows of pillars supporting the upper floor; and behind this three small rooms, and a square hall with a side entrance. - "Half a Century", Jane Grey Cannon Swisshelm.