stemware vs tass

stemware

noun
  • Drinking glasses that have a stem, such as wine glasses or champagne flutes. 

tass

noun
  • A cup or cupful. 

  • An Oriental silk fabric, with gold or silver thread. 

  • Synonym of tasse 

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