disturb vs lose the plot

disturb

verb
  • to divert, redirect, or alter by disturbing. 

  • to confuse a quiet, constant state or a calm, continuous flow, in particular: thoughts, actions or liquids. 

  • to have a negative emotional impact; to cause emotional distress or confusion. 

lose the plot

verb
  • To cease to behave in a consistent and/or rational manner. 

  • To lose sight of an important objective or principle; to act contrarily to one's own interests through concentrating on relatively unimportant matters. 

  • Used other than figuratively or idiomatically: see lose, plot. 

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