hoax vs whiff-whaff

hoax

noun
  • Anything deliberately intended to deceive or trick. 

verb
  • To deceive (someone) by making them believe something that has been maliciously or mischievously fabricated. 

whiff-whaff

noun
  • Unnecessary items or additions. 

  • The breathy sound of something rushing quickly; whoosh. 

How often have the words hoax and whiff-whaff occurred in a corpus of books? (source: Google Ngram Viewer )