lose the plot vs rave

lose the plot

verb
  • 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. 

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

rave

verb
  • To wander in mind or intellect; to be delirious; to talk or act irrationally; to be wild, furious, or raging. 

  • To talk with unreasonable enthusiasm or excessive passion or excitement; followed by about, of, or (formerly) on. 

  • To speak or write wildly or incoherently. 

  • To attend a rave (dance party). 

noun
  • An all-night dance party with electronic dance music (techno, trance, drum and bass etc.) and possibly drug use. 

  • The genres of electronic dance music usually associated with rave parties. 

  • An enthusiastic review (such as of a play). 

  • One of the upper side pieces of the frame of a wagon body or a sleigh. 

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