<p><strong>Verb</strong></p><ul><li>(used with object) to put each in the place of the other: to interchange pieces of modular furniture.</li><li>to cause (one thing) to change places with another; transpose.</li><li>to give and receive (things) reciprocally; exchange: The twins interchanged clothes frequently.</li><li>to cause to follow one another alternately; alternate: to interchange business cares with pleasures.</li></ul><p><strong>Verb</strong></p><ul><li>(used without object) to occur by turns or in succession; alternate.</li><li>to change places, as two persons or things, or as one with another.</li></ul><p><strong>Noun</strong></p><ul><li>an act or instance of interchanging; reciprocal exchange: the interchange of commodities.</li><li>a changing of places, as between two persons or things, or of one with another.</li><li>alternation; alternate succession.</li><li>a highway intersection consisting of a system of several different road levels arranged so that vehicles may move from one road to another without crossing the streams of traffic.</li></ul>