horsefeathers vs whiff-whaff

horsefeathers

noun
  • Nonsense; indicates disbelief. 

  • Feathering strips. 

  • Long hair on lower legs of a draft horse (e.g., Clydesdale), especially the rear legs. 

intj
  • Indicates disbelief. 

whiff-whaff

noun
  • The breathy sound of something rushing quickly; whoosh. 

  • Unnecessary items or additions. 

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