thorough vs unrepentant

thorough

adj
  • Utter; complete; absolute. 

  • Painstaking and careful not to miss or omit any detail. 

noun
  • A furrow between two ridges, to drain off the surface water. 

unrepentant

adj
  • Feeling or showing no sorrow or regret for wrongdoing. 

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