flip-flop vs swap out

flip-flop

noun
  • A change of places; an inversion or swap. 

  • A return trip. 

  • A sandal consisting of a rubber sole fastened to the foot by a rubber thong fitting between the toes and around the sides of the foot. 

  • A bistable; an electronic switching circuit that has either two stable states (switching between them in response to a trigger) or a stable and an unstable state (switching from one to the other and back again in response to a trigger), and which is thereby capable of serving as one bit of memory. 

  • An instance of flip-flopping, of repeatedly changing one's stated opinion about a matter. 

  • The sound of a regular footfall. 

  • A somersault. 

verb
  • To alternate back and forth between directly opposite opinions, ideas, or decisions. 

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