#spile__pile__piling__stilt  a column of wood or steel or concrete that is driven into the ground to provide support for a structure
  supertype:  #column.upright__pillar  a tall cylindrical vertical upright
  subtype:  #sheet_pile__sheetpile__sheath_pile__sheet_piling__sheetpiling  a pile in a row of piles driven side by side to retain earth or prevent seepage

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