analytical vs thoughtless

analytical

adj
  • Using analytic reasoning as opposed to synthetic. 

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

thoughtless

adj
  • Lacking thought or consideration. 

  • Marked by or showing lack of due thought or care; careless. 

  • Inconsiderate, inattentive. 

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