accessary vs incendiary

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. 

incendiary

noun
  • One who excites or inflames factions into quarrels. 

  • Something capable of causing fire, particularly a weapon. 

  • One who maliciously sets fires. 

adj
  • Intentionally stirring up strife, riot, rebellion. 

  • Capable of, or used for, or actually causing fire. 

  • Inflammatory, emotionally charged. 

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