confusion vs disorientation

confusion

noun
  • The state of being confused; misunderstanding. 

  • The act of mistaking one thing for another or conflating distinct things. 

  • A lack of clarity or order. 

  • Lack of understanding due to dementia. 

disorientation

noun
  • a state of confusion with regard to time, place or identity. 

  • the loss of one's sense of direction, or of one's position in relationship with the surroundings. 

  • a delusion. 

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