salvage vs swap out

salvage

noun
  • Anything put to good use that would otherwise have been wasted, such as damaged goods. 

  • The similar rescue of property liable to loss; the property so rescued. 

  • The money from the sale of rescued goods. 

  • Summary execution, extrajudicial killing. 

  • The rescue of a ship, its crew and passengers or its cargo from a hazardous situation. 

  • The ship, crew or cargo so rescued. 

  • The compensation paid to the rescuers. 

verb
  • to rescue. 

  • To make new or restore for the use of being saved. 

  • To apprehend and execute (a suspected criminal) without trial. 

  • To perform summary execution. 

  • to put to use. 

swap out

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. 

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

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

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

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