direction vs vortex

direction

noun
  • A general trend for future action. 

  • Guidance, instruction. 

  • A theoretical line (physically or mentally) followed from a point of origin or towards a destination. May be relative (e.g. up, left, outbound, dorsal), geographical (e.g. north), rotational (e.g. clockwise), or with respect to an object or location (e.g. toward Boston). 

  • The work of the director in cinema or theater; the skill of directing a film, play etc. 

vortex

noun
  • Anything that inevitably draws surrounding things into its current. 

  • 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. 

  • 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 direction and vortex occurred in a corpus of books? (source: Google Ngram Viewer )