cordon vs segregate

cordon

verb
  • Only used in cordon off 

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. 

segregate

verb
  • To separate, especially by social policies that directly or indirectly keep races or ethnic groups apart. 

adj
  • Separated from others of the same kind. 

  • Separate from a mass and collected together along lines of fraction. 

  • Separate; select. 

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