swap out vs trouser

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. 

trouser

verb
  • To take and keep (something, especially money, that is not one's own); to pocket. 

  • To secretively steal (an item or money) for personal use. 

  • To put (money) into one's trouser pocket; to pocket. 

noun
  • A pair of trousers. 

  • Of or relating to trousers. 

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