retard vs stir

retard

verb
  • To keep delaying; to continue to hinder; to prevent from progressing. 

  • To put off; to postpone. 

  • To decelerate; to slow down. 

noun
  • Retardation; delay. 

  • A slowing down of the tempo; a ritardando. 

  • A person or being who is extremely stupid or slow to learn. 

stir

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

  • 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 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. 

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

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

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

  • Jail; prison. 

  • Agitation of thoughts; conflicting passions. 

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