cups vs tea service

cups

noun
  • A suit of the minor arcana in tarot, bearing the symbol of a cup or chalice. 

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 cups and tea service occurred in a corpus of books? (source: Google Ngram Viewer )