vortex vs whirlwind

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 

whirlwind

noun
  • A person or body of objects or events sweeping violently onward. 

  • A violent windstorm of limited extent, as the tornado, characterized by an inward spiral motion of the air with an upward current in the center; a vortex of air. It usually has a rapid progressive motion. 

adj
  • Rapid and minimal: a whirlwind tour, a whirlwind romance. 

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