renew vs swap out

renew

verb
  • To replace (something which has broken etc.); to replenish (something which has been exhausted), to keep up a required supply of. 

  • To repeat. 

  • To begin again; to recommence. 

  • To make new spiritually; to regenerate. 

  • To make (something) new again; to restore to freshness or original condition. 

  • To extend a period of loan, especially a library book that is due to be returned. 

noun
  • Synonym of renewal 

swap out

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

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

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

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. 

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