entr'acte vs intermezzo

entr'acte

noun
  • An interval between two acts of a play or opera. 

  • Another performance, such as a piece of music or a dance, during this. 

intermezzo

noun
  • A short piece of music or act in the interval of the main spectacle; a theatrical interlude. 

  • A tactical move which interrupts the execution of the current plan. 

  • A palate cleanser; a small snack with a bright light neutral taste; a fruit; a fresh sparkling wine; or a fruity or milky cocktail; that is served between courses in a meal. 

How often have the words entr'acte and intermezzo occurred in a corpus of books? (source: Google Ngram Viewer )