clay vs porcelain

clay

noun
  • A clay pigeon. 

  • A mineral substance made up of small crystals of silica and alumina, that is ductile when moist; the material of pre-fired ceramics. 

  • A moth, Mythimna ferrago 

  • A tennis court surface made of crushed stone, brick, shale, or other unbound mineral aggregate. 

  • A clay pipe for smoking tobacco. 

  • Land or territory of a country or other political region, especially when subject to territorial claims 

  • An earth material with ductile qualities. 

  • The material of the human body. 

  • A particle less than 3.9 microns in diameter, following the Wentworth scale. 

verb
  • To purify using clay. 

  • To add clay to, to spread clay onto. 

porcelain

noun
  • A kind of pigeon with deep brown and off-white feathers. 

  • Synonym of cowrie. 

  • Synonym of china: porcelain tableware. 

  • An object made of porcelain, (particularly) art objects or items of tableware. 

  • A hard white translucent ceramic, originally made by firing kaolin, quartz, and feldspar at high temperatures but now also inclusive of similar artificial materials; also often (figurative) such a material as a symbol of the fragility, elegance, etc. traditionally associated with porcelain goods. 

How often have the words clay and porcelain occurred in a corpus of books? (source: Google Ngram Viewer )