swopping

/S W AA1 P IH0 NG/
verb
  1. 1

    To exchange or give (something) in an exchange (for something else).

  2. 2

    To hit, to strike.

  3. 3

    To beat the air, or ply the wings, with a sweeping motion or noise; to flap.

  4. 4

    To descend or fall; to rush hastily or violently.

noun
  1. 1

    The act by which something is swapped; an exchange.

Source: https://en.wiktionary.org/wiki/swap, https://en.wiktionary.org/wiki/swapping, https://en.wiktionary.org/wiki/swop, https://en.wiktionary.org/wiki/swopping