soi-disant vs sworn

soi-disant

adj

  • Self-styled; self-proclaimed. 

adv

  • supposedly 

sworn

adj

  • Ardent, devout. 

  • Given or declared under oath. 

  • Bound as though by an oath. 

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