have a break vs stand down

have a break

verb
  • To have a short rest period from work, study, etc. 

stand down

verb
  • To wait; to stop pursuing, stop fighting, or relax from a heightened readiness posture. 

  • To withdraw or retire from a position or from a team. 

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