fess vs spill the beans

fess

verb
  • To confess; to admit. 

adj
  • Of animals, bad-tempered, fierce. 

  • Lively; active; strong. 

  • Proud; conceited. 

noun
  • A horizontal band across the middle of the shield. 

spill the beans

verb
  • To reveal a secret; to disclose. 

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