malice vs virulence

malice

noun
  • Intention to harm or deprive in an illegal or immoral way. Desire to take pleasure in another's misfortune. 

  • An intention to do injury to another party, which in many jurisdictions is a distinguishing factor between the crimes of murder and manslaughter. 

verb
  • To intend to cause harm; to bear malice. 

virulence

noun
  • The state of being virulent. 

  • A measure of how virulent a thing is. 

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