analytical vs unsound

analytical

adj
  • Using analytic reasoning as opposed to synthetic. 

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

unsound

adj
  • Not whole, not solid, defective. 

  • Infirm, diseased. 

  • Not good, unreliable. 

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