• On the surface (synset 302480566)
  • The outer boundary of an artifact or a material layer constituting or resembling such a boundary (synset 104369112)
  • The extended two-dimensional outer boundary of a three-dimensional object (synset 108677970)
  • The outermost level of the land or sea (synset 109474647)
  • A superficial aspect as opposed to the real nature of something (synset 105862014)
  • Information that has become public (synset 105620592)
  • A device that provides reactive force when in motion relative to the surrounding air
    Can lift or control a plane in flight (synset 102691302)

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