obsessed vs unconcerned

obsessed

adj
  • Intensely preoccupied with or by a given topic or emotion; driven by a specified obsession. 

  • Influenced or controlled by evil spirits, but less than possessed in that the spirits do not actually reside in the victim. 

unconcerned

adj
  • Indifferent and having no interest; aloof. 

  • Not anxious, apprehensive, or worried. 

  • Having no involvement. 

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