entr'acte vs interruption

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. 

interruption

noun
  • The act of interrupting, or the state of being interrupted. 

  • A time interval during which there is a cessation of something. 

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