babushka vs nana

babushka

noun
  • A stereotypical, Eastern European peasant grandmother-type figure. 

  • Russian doll, matryoshka 

  • An old woman of Russian or Belarusian descent with unwelcome conservative and/or Orthodox Christian views. 

  • An old woman, especially one of Eastern European descent. 

  • A traditional floral headscarf worn by an Eastern European woman, tied under the chin. 

nana

noun
  • One's grandmother. 

  • A nanny. 

  • A banana. 

  • A foolish person. 

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