amulet vs enchantment

amulet

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

enchantment

noun
  • Something that enchants; a magical spell. 

  • The act of enchanting or the feeling of being enchanted. 

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