reap vs swap out

reap

verb
  • To obtain or receive as a reward, in a good or a bad sense. 

  • To terminate a child process that has previously exited, thereby removing it from the process table. 

  • To gather (e.g. a harvest) by cutting. 

  • To cut (for example a grain) with a sickle, scythe, or reaping machine 

noun
  • A bundle of grain; a handful of grain laid down by the reaper as it is cut. 

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