Naming of Minimum Distance Operator

We are planning to add a new operator that can be used to compute the minimal distance between space occupied by two objects (accounting for shape, size, etc…). This is different from the current distance from X to Y operator which only accounts for position (treating X and Y as vectors and calculating the distance between them). Please vote below for your choice(s) of name for this new operator.

  • minimum distance from X to Y
  • closest distance from X to Y
  • surface distance from X to Y
  • gap between X and Y
  • gap from X to Y
  • separation between X and Y
  • separation from X to Y
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