harridan vs tartar

harridan

noun
  • A vicious and scolding woman, especially an older one. 

tartar

noun
  • A red compound deposited during wine making; mostly potassium hydrogen tartrate — a source of cream of tartar. 

  • A hard yellow deposit on the teeth, formed from dental plaque. 

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