accessary vs second-class

accessary

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

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. 

second-class

adj
  • Inferior in quality or standing. 

  • Of a standard or grade one level below the best. 

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