fluster vs mystifier

fluster

noun
  • A state of being flustered; overwrought confusion. 

verb
  • To confuse; befuddle; throw into panic by making overwrought with confusion. 

  • To be in a heat or bustle; to be agitated and confused. 

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 fluster and mystifier occurred in a corpus of books? (source: Google Ngram Viewer )