faience vs pottery

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.) 

pottery

noun
  • Fired ceramic wares that contain clay when formed. 

  • The potter's craft or art: making vessels from clay. 

  • A potter's shop or workshop, where pottery is made. 

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