progress vs retreat

progress

noun
  • Movement onwards or forwards or towards a specific objective or direction; advance. 

  • Specifically, advancement to a higher or more developed state; development, growth. 

  • An official journey made by a monarch or other high personage; a state journey, a circuit. 

  • Movement or advancement through a series of events, or points in time; development through time. 

  • Science has made extraordinary progress in the last fifty years. 

verb
  • To develop. 

  • To expedite. 

  • To move, go, or proceed forward; to advance. 

  • To improve; to become better or more complete. 

retreat

noun
  • The act of reversing direction and receding from a forward position. 

  • A peaceful, quiet place affording privacy or security. 

  • A bugle call or drumbeat signaling the lowering of the flag at sunset, as on a military base. 

  • A military ceremony to lower the flag. 

  • The move of a piece from a threatened position. 

  • A period of retirement, seclusion, or solitude. 

  • A period of meditation, prayer or study. 

  • The act of pulling back or withdrawing, as from something dangerous, or unpleasant. 

  • A signal for a military withdrawal. 

  • Withdrawal by military force from a dangerous position or from enemy attack. 

verb
  • To slope back. 

  • To withdraw military forces 

  • To shrink back due to generally warmer temperatures. 

  • To withdraw from a position, go back. 

  • a retreating forehead 

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