accessorial vs erratic

accessorial

adj
  • Of or pertaining to an accessory, e.g. to a crime. 

  • Of or relating to an accession. 

  • Assessorial. 

noun
  • An assessorial charge. 

erratic

adj
  • Deviating from normal opinions or actions; eccentric; odd. 

  • Unsteady, random; prone to unexpected changes; not consistent. 

noun
  • A rock moved from one location to another, usually by a glacier. 

  • Anything that has erratic characteristics. 

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