accessary vs addition

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. 

addition

noun
  • A title annexed to a person's name to identify him or her more precisely. 

  • The act of adding anything. 

  • The arithmetic operation of adding. 

  • A dot at the right side of a note as an indication that its sound is to be lengthened one half. 

  • Anything that is added. 

  • Something added to a coat of arms, as a mark of honour. 

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