pay out vs swap out

pay out

verb
  • To distribute money; to disburse 

  • To slacken a rope by lengthening it; to allow a rope to run out. 

  • To make fun of or insult, often in a teasing manner. 

  • To repay, take revenge 

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