#diagram  a drawing intended to explain how something works; a drawing showing the relation between the parts
  supertype:  #drawing  picture produced by representing forms or objects on a surface by means of lines; "he did complicated pen-and-ink drawings like medieval miniatures"
  subtype:  #block_diagram__blockdiagram  a diagram showing the interconnections between the components of system (especially an electronic system)
  subtype:  #horoscope.diagram  a diagram of the positions of the planets and signs of the zodiac at a particular time and place
  subtype:  #schematic_drawing__schematicdrawing__schematic  diagram of an electrical or mechanical system
     subtype:  #wiring_diagram  a schematic drawing of the wiring of an electrical system
  subtype:  #Venn_diagram__Venn's_diagram  a diagram that uses circles to represent set theory; the position and overlap of the circles indicate the relations among the sets
  subtype:  #zodiac  (astrology) a circular diagram representing the 12 zodiacal constellations and showing their signs

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