put one's feet up vs stand down

put one's feet up

verb
  • To relax. 

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 put one's feet up and stand down occurred in a corpus of books? (source: Google Ngram Viewer )