blindside vs flinch

blindside

verb
  • To catch off guard; to take by surprise. 

  • To attack (a person) on his or her blind side. 

noun
  • The blindside flanker, a position in rugby union, usually number 6. 

  • A person's weak point. 

  • A tram/train driver's field of blindness around a tram (trolley/streetcar) or a train; the side areas behind the tram/train driver. 

  • The space on the side of the pitch with the shorter distance between the breakdown/set piece and the touchline; compare openside. 

  • A driver's field of blindness around an automobile; the side areas behind the driver. 

flinch

verb
  • To make a sudden, involuntary movement in response to a (usually negative) stimulus; to cringe. 

  • To dodge (a question), to avoid an unpleasant task or duty 

  • To let the foot slip from a ball, when attempting to give a tight croquet. 

noun
  • The slipping of the foot from a ball, when attempting to give a tight croquet. 

  • A reflexive jerking away. 

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