derange vs untangle

derange

verb
  • To cause disorder in (something); to distort from its ideal state. 

  • To cause to malfunction or become inoperative. 

  • To cause (someone) to go insane or become deranged. 

untangle

verb
  • To remove confusion or mystery from. 

  • To remove tangles or knots from. 

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