forestall vs retard

forestall

verb
  • To prevent, delay or hinder something by taking precautionary or anticipatory measures; to avert. 

  • To obstruct or stop up, as a road; to stop the passage of a highway; to intercept on the road, as goods on the way to market. 

  • To anticipate, to act foreseeingly. 

  • To preclude or bar from happening, render impossible. 

  • To deprive (with of). 

noun
  • Something situated or placed in front. 

retard

verb
  • To keep delaying; to continue to hinder; to prevent from progressing. 

  • To put off; to postpone. 

  • To decelerate; to slow down. 

noun
  • Retardation; delay. 

  • A slowing down of the tempo; a ritardando. 

  • A person or being who is extremely stupid or slow to learn. 

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