hocus-pocus vs whiff-whaff

hocus-pocus

noun
  • Some ineffectual action or speech, especially if intended to divert attention; nonsense. 

  • Religious or supernatural phenomena one holds to be nonsense or mere trickery; superstitious mumbo-jumbo. 

  • Some action carried out to bring about change as if by magic; a trick; sleight of hand, trickery. 

intj
  • A phrase used (by a stage magician, etc.) as a magical incantation to bring about some change: abracadabra, hey presto. 

whiff-whaff

noun
  • Unnecessary items or additions. 

  • The breathy sound of something rushing quickly; whoosh. 

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