discover vs uncloak

discover

verb
  • To create by moving a piece out of another piece's line of attack. 

  • To find or learn something for the first time. 

  • To question (a person) as part of discovery in a lawsuit. 

uncloak

verb
  • To remove a cloak or cover from; to deprive of a cloak or cover; to unmask; to reveal. 

  • To become visible again by turning off a cloaking device. 

  • To remove one's cloak. 

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