astonishment vs incredulity

astonishment

noun
  • The feeling or experience of being astonished; great surprise. 

  • Something very surprising. 

incredulity

noun
  • Unwillingness or inability to believe; doubt about the truth or verisimilitude of something; disbelief. 

  • Religious disbelief, lack of faith. 

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