ambiguity vs mystifier

ambiguity

noun
  • The state of being ambiguous. 

  • words or statements that are open to more than one interpretation, explanation or meaning, especially if that meaning cannot be determined from its context. 

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