reversal vs transposition

reversal

noun
  • An instance of reversing. 

  • A change in fortune; a change from being successful to having problems. 

  • The state of being reversed. 

adj
  • Intended to reverse; implying reversal. 

transposition

noun
  • The act or process of transposing or interchanging. 

  • A incorporation of the provisions of a European Union directive into a Member State's domestic law. 

  • A sequence of moves resulting in a position that may also be reached by another, more common sequence. 

  • A shift of a piece of music to a different musical key by adjusting all the notes of the work equally either up or down in pitch. 

verb
  • To transpose 

  • To take on the role of another person 

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