#opportunity_cost__opportunitycost  cost in terms of foregone alternatives
  supertype:  cost  the total spent for goods or services including money and time and labor
  subtype:  cost_of_capital__capital_cost__capitalcost  the opportunity cost of the funds employed as the result of an investment decision; the rate of return that a business could earn if it chose another investment with equivalent risk
  subtype:  carrying_cost__carrying_charge  the opportunity cost of unproductive assets; the expense incurred by ownership

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