jumble vs nonregularity

jumble

noun

  • A mixture of often unrelated things. 

  • A rummage sale. 

  • Items for a rummage sale. 

verb

  • To meet or unite in a confused way. 

  • To mix or confuse. 

nonregularity

noun

  • The state or condition of being nonregular. 

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