accessary vs agitator

accessary

noun
  • Someone who accedes to some act, now especially a crime; one who contributes as an assistant or instigator to the commission of an offense. 

adj
  • Accompanying as a subordinate; additional; accessory; especially, uniting in, or contributing to, a crime, but not as chief actor. See accessory. 

agitator

noun
  • One who agitates; one who stirs up or excites others, for example political reformers. 

  • An implement for shaking or mixing. 

  • One of a body of men appointed by the army, in Oliver Cromwell's time, to look after their interests. 

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