cordon vs vortex

cordon

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

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

  • 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 

vortex

noun
  • Anything that involves constant violent or chaotic activity around some centre. 

  • A whirlwind, whirlpool, or similarly moving matter in the form of a spiral or column. 

  • Anything that inevitably draws surrounding things into its current. 

  • A supposed collection of particles of very subtle matter, endowed with a rapid rotary motion around an axis which was also the axis of a sun or planet; part of a Cartesian theory accounting for the formation of the universe, and the movements of the bodies composing it. 

  • Any of numerous species of small Turbellaria belonging to Vortex and allied genera. 

verb
  • To mix using a vortex mixer 

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