crock vs porcelain

crock

noun
  • A stoneware or earthenware jar or storage container. 

  • Silly talk, a foolish belief, a poor excuse, nonsense. 

  • A piece of broken pottery, a shard. 

  • An old or broken-down vehicle (and formerly a horse or ewe). 

  • A patient who is difficult to treat, especially one who complains of a minor or imagined illness. 

  • A person who is physically limited by age, illness or injury. 

  • A low stool. 

  • The loose black particles collected from combustion, as on pots and kettles, or in a chimney; soot; smut. 

  • Colouring matter that rubs off from cloth. 

verb
  • To put or store (something) in a crock or pot. 

  • To cover the drain holes of a planter with stones or similar material, in order to ensure proper drainage. 

  • To give off crock or smut. 

  • To transfer coloring through abrasion from one item to another. 

  • To break something or injure someone. 

porcelain

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

  • Synonym of cowrie. 

  • Synonym of china: porcelain tableware. 

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

  • A hard white translucent ceramic, originally made by firing kaolin, quartz, and feldspar at high temperatures but now also inclusive of similar artificial materials; also often (figurative) such a material as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 crock and porcelain occurred in a corpus of books? (source: Google Ngram Viewer )