Gift cards are just one step away from cash. For that reason, I don't recommend swapping them via eBay or Craigslist. A gift card's balance can be used up in seconds -- even without the physical card ...
Swapping is a memory management technique in which a process is temporarily moved from main memory (RAM) to secondary storage (disk) and vice versa. This allows the operating system to manage limited RAM effectively and run multiple processes concurrently in a multiprogramming environment.
By swapping the electron for the muon they have increased the atomic density and binding field strength of the atomic components, essentially "compressing" the proton.
make an exchange: [~ + object] They sat on the bench, swapping lies about the good old days. [~ + object + for + object] I'll swap my orange for your apple. [no object] You like my cookies and I like yours; let's swap.
Swapping is a memory management scheme in which any process can be temporarily swapped from main memory to secondary memory so that the main memory can be made available for other processes.
From Longman Business Dictionary swap1 /swɒpswɑːp/ (also swop British English) verb (swapped, swapping) [transitive] to exchange one investment for another swap something for something Investors have doubled their money afterswapping thebonds for a package of cash and shares.
Purpose or Intention: Use the infinitive "to swap" when you want to express a purpose, intention, desire, or potential action. I want to swap my book with yours. Activity or Experience: Use the gerund "swapping" when you want to refer to the activity itself or the experience as a noun.