tradeoff

WORDNET DICTIONARY

tradeoff(n = noun.act) trade-off - an exchange that occurs as a compromise; "I faced a tradeoff between eating and buying my medicine"

is a kind of exchange, interchange

tradeoff, n.

the exchange of one thing (object, right, opportunity) for another of approximately equal value, so as to seal a bargain, or effect a compromise. [PJC]
the giving up of one desired objective in order to attain another, when both cannot be achieved at the same time; as, the factory workers viewed the trade-off of air quality for jobs as a necessary evil. [PJC]

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