jumble vs open can of worms

jumble

verb

  • To meet or unite in a confused way. 

  • To mix or confuse. 

noun

  • A mixture of often unrelated things. 

  • A rummage sale. 

  • Items for a rummage sale. 

open can of worms

How often have the words jumble and open can of worms occurred in a corpus of books? (source: Google Ngram Viewer )