supposed vs truthful

supposed

adj
  • Intended. 

  • Having an obligation. 

  • Generally considered or expected. 

  • Presumed to be true, but without proof 

truthful

adj
  • Accurately depicting what is real. 

  • Honest, and always telling the truth. 

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