curiously vs idiosyncratically

curiously

adv
  • Oddly; in a strange or unexpected way. 

  • In a curious manner; with curiosity; inquisitively. 

idiosyncratically

adv
  • In an idiosyncratic manner. 

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