swap out vs transposition

swap out

noun
  • Anything that is swapped out for another; an exchange. 

  • A pre-prepared food item used in place of an unfinished food item in order to cut down the overall preparation time during filming. 

verb
  • To exchange (something) for (something else). (usually followed by with or for) 

  • To transfer (memory contents) into a swap file. 

  • To exchange (something or someone) for an unused (or less-used) equivalent. 

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 swap out and transposition occurred in a corpus of books? (source: Google Ngram Viewer )