marketplace

n. open place in a town where a market is held; bazaar; fair

A marketplace is the space, actual or metaphorical, in which a market operates. The term is also used in a trademark law context to denote the actual consumer environment, ie. the 'real world' in which products and services are provided and consumed.
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Noun
1. the world of commercial activity where goods and services are bought and sold; "without competition there would be no market"; "they were driven from the marketplace"
(synonym) market
(hypernym) activity
(hyponym) black market
(part-meronym) commercial enterprise, business enterprise, business
2. an area in a town where a public mercantile establishment is set up
(synonym) mart
(hypernym) mercantile establishment, retail store, sales outlet, outlet
(hyponym) agora, forum, public square

men2 ting2 ruo4 shi4
The house is like a marketplace.
Said of a place overflowing with people coming and going.

Synonyms and related words:
agora, amphitheater, arena, athletic field, auditorium, auto show, background, bazaar, bear garden, boat show, bowl, boxing ring, bull ring, campo, campus, canvas, circus, cockpit, coliseum, colosseum, commercial complex, course, emporium, exposition, fair, field, flea fair, flea market, floor, forum, ground, gym, gymnasium, hall, hippodrome, lists, locale, market, market cross, market overt, mart, mat, milieu, open forum, open market, palaestra, parade ground, piazza, pit, place, platform, plaza, precinct, prize ring, public square, purlieu, range, rialto, ring, scene, scene of action, scenery, setting, shopping center, shopping mall, shopping plaza, show, site, sphere, square, squared circle, stadium, stage, stage set, stage setting, staple, street market, terrain, theater, tilting ground, tiltyard, trade fair, walk, wrestling ring