gup vs pigswill

gup

noun
  • Gossip or rumor; nonsensical or silly talk; blather. 

  • An elected head of a gewog in Bhutan. 

pigswill

noun
  • nonsense, rubbish 

  • swill: slops fed to pigs 

How often have the words gup and pigswill occurred in a corpus of books? (source: Google Ngram Viewer )