flabbergaster vs mystifier

flabbergaster

noun
  • A state of surprise or fear. 

  • A person, thing, fact or event that is flabbergasting, or that causes extreme shock. 

mystifier

noun
  • A situation that is puzzling, or mystifying 

  • A person who obscures or muddles information, making something appear to be a mystery. 

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