demitasse vs espresso

demitasse

noun
  • The cup in which this coffee is served. 

  • A small cup of strong black coffee. 

espresso

noun
  • A concentrated coffee beverage brewed by forcing hot water under high pressure through finely ground coffee. 

  • A drink that includes espresso as an ingredient. 

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