amulet vs juju

amulet

noun
  • A kind of protective charm or ornament, often bearing magical symbols, worn for protection against ill will, negative influences, or evil spirits. 

juju

noun
  • The magical or supernatural power of such a charm. 

  • A fetish or charm believed by West Africans to have magical or supernatural powers. 

  • Synonym of jùjú (“music genre”) 

  • A marijuana cigarette; a joint. 

  • The (usually negative) karmic consequences of an action or behavior. 

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