gently vs heavily

gently

adv
  • In a gentle manner; to a gentle degree. 

  • Without strong force or quickness: softly, lightly. 

  • From a gentle or high-class family. 

  • Quietly: without much noise or motion. 

heavily

adv
  • With a great weight. 

  • To a considerable degree, to a great extent. 

  • So as to be thick or heavy. 

  • In a laboured manner. 

  • In a manner designed for heavy duty. 

  • In a heavy manner. 

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