malignity vs spitefulness

malignity

noun
  • The quality of being malign or malignant; badness, evilness, monstrosity, depravity, maliciousness. 

  • A non-benign cancer; a malignancy. 

spitefulness

noun
  • The state or quality of being spiteful. 

  • The result or product of being spiteful. 

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