soi-disant vs supposed

soi-disant

adj
  • Self-styled; self-proclaimed. 

adv
  • supposedly 

supposed

adj
  • Intended. 

  • Having an obligation. 

  • Generally considered or expected. 

  • Presumed to be true, but without proof 

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