The Collaborative International Dictionary of English v.0.48:

Interchange \In`ter*change"\, v. t. [imp. & p. p.
   Interchanged; p. pr. & vb. n. Interchanging.] [OE.
   entrechangen, OF. entrechangier. See Inter-, and Change.]
   [1913 Webster]
   1. To put each in the place of the other; to give and take
      mutually; to exchange; to reciprocate; as, to interchange
      places; they interchanged friendly offices and services.
      [1913 Webster]

            I shall interchange
            My waned state for Henry's regal crown. --Shak.
      [1913 Webster]

   2. To cause to follow alternately; to intermingle; to vary;
      as, to interchange cares with pleasures.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Interchange \In`ter*change"\, v. i.
   To make an interchange; to alternate. --Sir P. Sidney.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Interchange \In`ter*change"\, n. [Cf. OF. entrechange.]
   [1913 Webster]
   1. The act of mutually changing; the act of mutually giving
      and receiving; exchange; as, the interchange of civilities
      between two persons. "Interchange of kindnesses." --South.
      [1913 Webster]

   2. The mutual exchange of commodities between two persons or
      countries; barter; commerce. --Howell.
      [1913 Webster]

   3. Alternate succession; alternation; a mingling.
      [1913 Webster]

            The interchanges of light and darkness. --Holder.
      [1913 Webster]

            Sweet interchange
            Of hill and valley, rivers, woods, and plains.
                                                  --Milton.
      [1913 Webster]

   4. An intersection between highways, having two or more
      levels and a series of connecting roadways so that traffic
      on one highway may pass over or under the other highway
      without crossing through the line of traffic, and vehicles
      may pass from one highway to the other while traffic on
      both highways continues uninterrupted. A common
      interchange is the cloverleaf.
      [PJC]

Moby Thesaurus II by Grady Ward, 1.0:

233 Moby Thesaurus words for "interchange":
   ESP, access, accord, agency, agree, agree with, aisle, alley,
   alternate, alternation, ambulatory, answer, aperture, arcade,
   artery, avenue, bandy, barter, bartering, be in connection,
   be in contact, be quits with, boomerang, brokerage, buy and sell,
   buying and selling, change, channel, chime in with, cloister,
   coact, coaction, colonnade, comeback, commerce, commerce with,
   commune with, communicate, communication, communion, commute,
   compensate, complementary distribution, concurrence, conduction,
   conduit, congress, connection, contact, contagion, convection,
   conversation, converse, cooperate, cooperation, correspond,
   correspondence, corridor, cotton to, counter, counterblast,
   counterblow, counterchange, counterstroke, covered way, deal,
   deal with, dealing, dealings, defile, delivery, deportation,
   diapedesis, diffusion, dissemination, do business, doing business,
   dovetail, empathize, engage, engagement, exchange, exit, export,
   exportation, expulsion, extradition, fall in with, ferry, ford,
   gallery, get along, get along with, get back at, get even with,
   get on with, give and take, give in exchange, give-and-take, handy,
   harmonize, harmonize with, have dealings with, have intercourse,
   have truck with, hold communication, horse trading, horse-trade,
   identify with, import, importation, information, inlet, interact,
   interaction, intercommunicate, intercommunication, intercommunion,
   intercourse, interlace, interlacing, intermesh, intermeshing,
   interplay, intersection, intertwine, intertwining, interweave,
   interweaving, interwork, interworking, jobbing, junction, lane,
   linguistic intercourse, logroll, merchandising, mesh, meshing,
   message, metastasis, metathesis, metempsychosis, migration,
   mortise, mutual transfer, opening, osmosis, outlet, overpass, pass,
   passage, passageway, passing over, pay back, perfusion, permute,
   portico, quid pro quo, railroad tunnel, reciprocate, reciprocation,
   recoil, reply, requite, respond, respond to, response, retailing,
   retaliate, retaliation, retort, return, return the compliment,
   reverse, seesaw, sing in chorus, social intercourse, speak,
   speaking, speech, speech circuit, speech situation, spread,
   spreading, swap, swap horses, swapping, switch, sympathize,
   take in exchange, talk, talking, telepathy, tit for tat, touch,
   trade, trade in, trade off, trade sight unseen, trading, traffic,
   traffic with, trafficking, traject, trajet, transduction, transfer,
   transfer of property, transference, transfusion, transit,
   transition, translation, translocation, transmigration,
   transmigration of souls, transmission, transmittal, transmittance,
   transplacement, transplantation, transposal, transpose,
   transposition, travel, truck, tunnel, two-way communication,
   underpass, understand one another, wheeling and dealing,
   wholesaling