blather vs whiff-whaff

blather

noun
  • Nonsensical or foolish talk. 

verb
  • To say (something foolish or nonsensical); to say (something) in a foolish or overly verbose way. 

  • To talk rapidly without making much sense. 

whiff-whaff

noun
  • Unnecessary items or additions. 

  • The breathy sound of something rushing quickly; whoosh. 

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