backset vs rotate

backset

verb
  • To plow again in the fall; said of prairie land broken up in the spring. 

noun
  • A check; a relapse; a discouragement; a setback. 

  • Whatever is thrown back in its course, such as water. 

rotate

verb
  • To grow or plant (crops) in a certain order. 

  • To spin, turn, or revolve. 

  • To lift the nose during takeoff, just prior to liftoff. 

  • To spin, turn, or revolve something. 

  • To advance through a sequence; to take turns. 

  • To advance something through a sequence; to allocate or deploy in turns. 

  • To replace older materials or to place older materials in front of newer ones so that older ones get used first. 

adj
  • Having the parts spreading out like a wheel; wheel-shaped. 

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