#trap.design__snare  something (often something deceptively attractive) that catches you unawares; "the exam was full of trap questions"; "it was all a snare and delusion"
  supertype:  design.organisation__plan  an arrangement scheme; "the awkward design of the keyboard made operation difficult"; "it was an excellent design for living"; "a plan for seating guests"
  subtype:  iron_trap  a trap from which there is no escape
  subtype:  speed_trap__speedtrap  a trap arranged on a roadway for catching speeders

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