counterchange

/K AW1 N ER0 CH EY1 N JH/
noun
  1. 1

    An exchange of one thing for another.

  2. 2

    Due return (for an action etc.); reciprocation.

verb
  1. 1

    To give and receive; C; to exchange.

  2. 2

    To checker; to diversify, as in heraldic counterchanging.

Source: https://en.wiktionary.org/wiki/counterchange