accessorial vs otiose

accessorial

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

  • Of or relating to an accession. 

  • Assessorial. 

noun
  • An assessorial charge. 

otiose

adj
  • Done in a careless or perfunctory manner. 

  • Having no reason for being (raison d’être); having no point, reason, or purpose. 

  • Having no effect. 

  • Reluctant to work or to exert oneself. 

  • Of a person, possessing a bored indolence. 

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