jerky vs not level

jerky

noun
  • Lean meat cured and preserved by cutting into thin strips and air-drying in the sun. 

adj
  • Characterized by physical jerking. 

  • Having the behavior of a jerk (unpleasant person). 

verb
  • To cure and preserve (meat) by drying it, making jerky. 

not level

How often have the words jerky and not level occurred in a corpus of books? (source: Google Ngram Viewer )