change over vs redirect

change over

verb
  • to convert to, to make a transition from one system to another 

redirect

verb
  • To give new direction to, change the direction of. 

  • To instruct to go, inquire, elsewhere. 

  • To substitute an address or pointer to a new location. 

  • To send to a new location by substituting an address or pointer. 

noun
  • A redirection. 

  • An examination of a witness, following cross-examination, by the party that conducted the direct examination. 

  • The substitution of one address or identifier for another one, so as to navigate to a different location. 

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