systemic lupus erythematosus vs vampirism

systemic lupus erythematosus

noun
  • A systemic autoimmune disease (or autoimmune connective tissue disease), where the immune system attacks the body's cells and tissue and causes inflammation and tissue damage. 

vampirism

noun
  • Systemic lupus erythematosus (autoimmune disease) 

  • practices associated with vampires, in particular blood-drinking and the draining of a victim's life-force. 

  • extortion 

  • the state of being a vampire 

How often have the words systemic lupus erythematosus and vampirism occurred in a corpus of books? (source: Google Ngram Viewer )