blindside vs cordon

blindside

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

  • 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. 

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

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

  • To catch off guard; to take by surprise. 

cordon

noun
  • The arc of fielders on the off side, behind the batsman - the slips and gully. 

  • A line of people or things placed around an area to enclose or protect it. 

  • A woody plant, such as a fruit tree, pruned and trained to grow as a single stem on a support. 

verb
  • Only used in cordon off 

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