stir vs vortex

stir

noun
  • agitation; tumult; bustle; noise or various movements. 

  • The act or result of stirring (moving around the particles of a liquid etc.) 

  • Public disturbance or commotion; tumultuous disorder; seditious uproar. 

  • Jail; prison. 

  • Agitation of thoughts; conflicting passions. 

verb
  • To incite to action. 

  • Of a feeling or emotion: to rise, begin to be felt. 

  • To disturb the relative position of the particles of (a liquid or similar) by passing an object through it. 

  • To begin to move, especially gently, from a still or unmoving position. 

  • To be in motion; to be active or bustling; to exert or busy oneself. 

  • To bring into debate; to agitate. 

  • To rise from sleep or unconsciousness. 

  • To disturb the content of (a container) by passing an object through it. 

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