counterchange

Etymology
From (noun),  (verb).

Verb

 * 1) To give and receive; C; to exchange.
 * 2) To checker; to diversify, as in heraldic counterchanging.

Synonyms

 * , ; See also Thesaurus:switch

Noun

 * 1)  An exchange of one thing for another.
 * 2)  Due return (for an action etc.); reciprocation.