penitence vs suffering

penitence

noun
  • The condition of being penitent; a feeling of regret or remorse for doing wrong or sinning. 

suffering

noun
  • The condition of someone who suffers; a state of pain or distress. 

adj
  • Experiencing pain; characterized by suffering. 

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