analytical vs unconcerned

analytical

adj
  • Using analytic reasoning as opposed to synthetic. 

  • Of or pertaining to analysis; resolving into elements or constituent parts 

unconcerned

adj
  • Not anxious, apprehensive, or worried. 

  • Having no involvement. 

  • Indifferent and having no interest; aloof. 

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