fence vs swap out

fence

verb
  • To engage in the selling or buying of stolen goods. 

  • To enclose, contain or separate by building fence. 

  • To engage in the sport of fencing. 

  • To jump over a fence. 

  • To conceal the truth by giving equivocal answers; to hedge; to be evasive. 

  • To defend or guard. 

noun
  • A memory barrier. 

  • Skill in oral debate. 

  • Someone who hides or buys and sells stolen goods, a criminal middleman for transactions of stolen goods. 

  • A thin artificial barrier that separates two pieces of land or forms a perimeter enclosing the lands of a house, building, etc. 

  • A guard or guide on machinery. 

  • The place whence such a middleman operates. 

  • A barrier, for example an emotional barrier. 

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