assemble vs stand down

assemble

verb
  • To put together. 

  • To translate from assembly language to machine code. 

  • To gather as a group. 

stand down

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

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

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