swap out vs transfer

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. 

transfer

noun
  • An instance of conveying or removing from one place, person or thing to another; a transferal. 

  • A person who transfers or is transferred from one club or team to another. 

  • The act of conveying or removing something from one place, person or thing to another. 

  • A design conveyed by contact from one surface to another; a heat transfer. 

  • A soldier removed from one troop, or body of troops, and placed in another. 

  • A pathological process by which a unilateral morbid condition on being abolished on one side of the body makes its appearance in the corresponding region upon the other side. 

  • An act of exiting one mass transit vehicle and boarding another (typically one belonging to a different line or mode of transportation) to continue a journey. 

  • A paper receipt given to a rider of one bus (and historically also certain elevated or subway lines), allowing free entry onto another bus to continue a journey. 

  • The conveying of genetic material from one cell to another. 

  • A conventional bid which requests partner to bid the next available suit. 

verb
  • To be or become transferred. 

  • To arrange for something to belong to or be officially controlled by somebody else. 

  • To exit one mass transit vehicle and board another (typically one belonging to a different line or mode of transportation) to continue a journey. 

  • To move or pass from one place, person or thing to another. 

  • To convey the impression of (something) from one surface to another. 

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