angularity vs obduracy

angularity

noun
  • A stiff, cranky, crotchety manner or behaviour. 

  • The property or characteristic of possessing angles. 

  • A sharp point or angle. 

obduracy

noun
  • The state of being obdurate, intractable, or stubbornly inflexible. 

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