accessary vs auxiliary

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. 

auxiliary

noun
  • A person or group that acts in an auxiliary manner. 

  • An auxiliary verb. 

  • A marching band colorguard. 

  • A sailing vessel equipped with an engine. 

adj
  • Supplementary or subsidiary. 

  • Helping; giving assistance or support. 

  • Held in reserve for exceptional circumstances. 

  • Of a ship, having both sails and an engine. 

  • Relating to an auxiliary verb. 

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