retreat vs travel

retreat

noun
  • The move of a piece from a threatened position. 

  • A peaceful, quiet place affording privacy or security. 

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

  • 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. 

  • 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 

travel

noun
  • The working motion of a piece of machinery; the length of a mechanical stroke. 

  • An account of one's travels. 

  • The activity or traffic along a route or through a given point. 

  • Distance that a keyboard's key moves vertically when depressed. 

  • The act of traveling; passage from place to place. 

  • A series of journeys. 

verb
  • To move illegally by walking or running without dribbling the ball. 

  • To travel throughout (a place). 

  • To pass from one place to another; to move or transmit 

  • To force to journey. 

  • To be on a journey, often for pleasure or business and with luggage; to go from one place to another. 

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