#ceramic  an artifact made of hard brittle material produced from nonmetallic minerals by firing at high temperatures
  supertype:  #instrumentality__instrumentation  an artifact (or system of artifacts) that is instrumental in accomplishing some end
  subtype:  #brick  rectangular block of clay baked by the sun or in a kiln; used as a building or paving material
     subtype:  #adobe_brick__adobebrick__adobe  sun-dried brick; used in hot dry climates
     subtype:  #clinker_brick__clinkerbrick__clinker  a hard brick used as a paving stone
     subtype:  #firebrick  brick made of fire clay; used for lining e.g. furnaces and chimneys
     subtype:  #coping__header__cope  brick that is laid sideways at the top of a wall

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