stoneware vs tea service

stoneware

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

tea service

noun
  • a set of matching crockery for serving tea; normally a teapot, cups, saucers and small plates etc.; some items may be silver 

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