faience vs stoneware

faience

noun
  • A type of tin-glazed earthenware ceramic. 

  • The beads and small ornaments of the eastern Mediterranean. (Of bronze and iron age manufacture using frit technology.) 

stoneware

noun
  • A type of pottery that is fired at a high temperature and is dense, opaque and nonporous. 

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