disenchant vs pep up

disenchant

verb
  • To remove a spell or magic enchantment from. 

  • To free from illusion, false belief or enchantment; to undeceive or disillusion. 

  • To disappoint. 

pep up

verb
  • To make stronger or more interesting. 

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