harshly vs roughly

harshly

adv
  • In a harsh manner; severely. 

roughly

adv
  • In a rough manner; without kindness, softness, or gentleness. 

  • Unevenly or irregularly. 

  • Without precision or exactness; imprecisely but close to in quantity or amount; approximately. 

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