#tariff__duty  a government tax on imports or exports; "they signed a treaty to lower duties on trade between their countries"
  supertype:  tax__revenue_enhancement  charge against a citizen's person or property or activity for the support of government
  subtype:  customs_duty__customsduty__customs__custom__custom__impost  money collected under a tariff
     subtype:  ship_money  an impost levied in England to provide money for ships for national defense
  subtype:  tonnage_duty__tonnageduty__tonnage__tunnage  a tax imposed on ships that enter the US; based on the tonnage of the ship
  subtype:  octroi  a tax on various goods brought into a town
  subtype:  revenue_tariff__revenuetariff  a tariff imposed to raise revenue
  subtype:  protective_tariff  a tariff imposed to protect domestic firms from import competition
     subtype:  anti-dumping_duty  a tariff imposed to prevent dumping
  subtype:  import_duty  a duty imposed on imports
  subtype:  export_duty  a duty imposed on exports
  subtype:  countervailing_duty  a duty imposed to offset subsidies by foreign governments

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