agitationist vs stirrer

agitationist

noun
  • Synonym of agitator (“one who stirs up or excites others, for example political reformers”) 

stirrer

noun
  • A person who spreads rumours or causes agitation. 

  • One who stirs or moves about, as after sleep. 

  • A device used to stir. 

  • A person who stirs something. 

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