#marketplace__market  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"
  supertype:  activity  any specific activity or pursuit; "they avoided all recreational activity"
  part:  business_enterprise
  subtype:  black_market__blackmarket  an illegal market in which goods or currencies are bought and sold in violation of rationing or controls
  subtype:  buyer's_market__buyer'smarket  a market in which more people want to sell than want to buy
  subtype:  seller's_market  a market in which more people want to buy than want to sell
  subtype:  labor_market__labormarket  the market in which workers compete for jobs and employers compete for workers
  subtype:  monopoly  (economics) a market in which there are many buyers but only one seller; "a monopoly on silver"; "when you have a monopoly you can ask any price you like"
     subtype:  corner  a temporary monopoly on a kind of commercial trade: "a corner on the silver market"
  subtype:  monopsony  (economics) a market in which goods or services are offered by several sellers but there is only one buyer
  subtype:  oligopoly  (economics) a market in which control over the supply of a commodity is in the hands of a small number of producers and each one can influence prices and affect competitors

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