conceit vs intrusive thought

conceit

noun
  • A novel or fanciful idea; a whim. 

  • Quickness of apprehension; active imagination; lively fancy. 

  • The faculty of conceiving ideas; mental faculty; apprehension. 

  • Design; pattern. 

  • Overly high self-esteem; vain pride; hubris. 

  • An ingenious expression or metaphorical idea, especially in extended form or used as a literary or rhetorical device. 

intrusive thought

noun
  • an unwelcome involuntary thought, image or idea 

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