breathing space vs entr'acte

breathing space

noun
  • Enough distance so that one can feel unfettered. 

  • A rest, pause, or respite. 

  • Sufficient space or a span of time in which to recover one's breath. 

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. 

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