aggravating circumstance vs grievance

aggravating circumstance

noun
  • A factor that increases the culpability or deleterious consequences of a wrongful act. 

grievance

noun
  • A wrong or hardship suffered, which is the grounds of a complaint. 

  • A formal complaint, especially in the context of a unionized workplace. 

  • Feelings of being wronged; outrage. 

  • Violation of regulations or objectionable behavior. 

  • A complaint or annoyance. 

  • Something which causes grief. 

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