pannikin vs stemware

pannikin

noun
  • A durable cup or other vessel used for drinking made of metal and coated in enamel. 

  • The contents of such a vessel. 

stemware

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

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