ferociously vs furiously

ferociously

adv
  • In a ferocious manner, particularly violent and aggressive. 

  • Intensely or extremely. 

furiously

adv
  • In a furious manner; angrily. 

  • Intensely, as with embarrassment. 

  • Quickly; frantically; with great effort or speed. 

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