mortadella vs pigswill

mortadella

noun
  • A smooth-textured Italian pork sausage with lumps of fat, flavoured with spices; eaten cold. 

pigswill

noun
  • swill: slops fed to pigs 

  • nonsense, rubbish 

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