extra point vs tickle

extra point

noun
  • A point scored after a touchdown by kicking the ball through the goal posts or by advancing to the end zone. 

tickle

noun
  • A light tap of the ball. 

  • The act of tickling. 

  • An itchy feeling resembling the result of tickling. 

  • A narrow strait. 

verb
  • To appeal to someone's taste, curiosity etc. 

  • To unexpectedly touch or stroke delicately in a manner which causes displeasure or withdrawal. 

  • To catch fish in the hand (usually in rivers or smaller streams) by manually stimulating the fins. 

  • To touch repeatedly or stroke delicately in a manner which causes laughter, pleasure and twitching. 

  • To cause delight or amusement in. 

  • To feel titillation. 

  • To feel as if the body part in question is being tickled. 

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