To interchange two things is to trade or switch them. If the painting hanging on your wall just doesn't fit the room, you can interchange it with the photograph on the opposite wall.

When you're baking a pie, you can usually interchange one kind of fruit for another, or interchange tapioca for cornstarch to thicken the filling. When interchange is a noun, it has various meanings including "highway intersection," or the place where these busy roads meet each other. This road meaning dates only from the 1940s, while the "change places" meaning is at least 400 years old.

Definitions of interchange
  1. verb
    cause to change places
    interchange this screw for one of a smaller size”
    synonyms: counterchange, transpose
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    type of:
    alter, change, modify
    cause to change; make different; cause a transformation
  2. verb
    put in the place of another; switch seemingly equivalent items
    synonyms: exchange, replace, substitute
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    move and exchange for another
    reduce, simplify
    simplify the form of a mathematical equation of expression by substituting one term for another
    replace a corner by a plane
    provide (a workshop or factory) with new tools
    substitute one creditor for another, as in the case where an insurance company sues the person who caused an accident for the insured
    type of:
    alter, change, modify
    cause to change; make different; cause a transformation
  3. verb
    give to, and receive from, one another
    synonyms: change, exchange
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    exchange or deliver for money or its equivalent
    cash, cash in
    exchange for cash
    ransom, redeem
    exchange or buy back for money; under threat
    turn in (vouchers or coupons) and receive something in exchange
    fill in, stand in, sub, substitute
    be a substitute
    swap, switch, swop, trade
    exchange or give (something) in exchange for
    exchange goods without involving money
    trade, trade in
    turn in as payment or part payment for a purchase
    sell or discount
    sell illegally, as on the black market
    sell illicit products such as drugs or alcohol
    sell short
    sell securities or commodities or foreign currency that is not actually owned by the seller, who hopes to cover (buy back) the sold items at a lower price and thus to earn a profit
    sell cheaply as remainders
    sell (something) again after having bought it
    sell articles, television programs, or photos to several publications or independent broadcasting stations
    sell (art works) from a collection, especially in order to raise money for the purchase of other art works
    sell off
    get rid of by selling, usually at reduced prices
    fob off, foist off, palm off
    sell as genuine, sell with the intention to deceive
    realise, realize
    convert into cash; of goods and property
    auction, auction off, auctioneer
    sell at an auction
    sell on the retail market
    sell in large quantities
    convert into cash
    convert into cash; of commercial papers
    barter away
    trade in in a bartering transaction
    sell at a loss
    dump, underprice
    sell at artificially low prices
    undercut, undersell
    sell cheaper than one's competition
    give, sell, or transfer to another
    dispose of by selling
    type of:
    cause to change ownership
  4. verb
    reverse (a direction, attitude, or course of action)
    synonyms: alternate, flip, flip-flop, switch, tack
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    type of:
    change by reversal, reverse, turn
    change to the contrary
  5. noun
    the act of changing one thing for another thing
    “there was an interchange of prisoners”
    synonyms: exchange
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    trade-off, tradeoff
    an exchange that occurs as a compromise
    type of:
    group action
    action taken by a group of people
  6. noun
    reciprocal transfer of equivalent sums of money (especially the currencies of different countries)
    “he earns his living from the interchange of currency”
    synonyms: exchange
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    act of exchanging one type of money or security for another
    barter, swap, swop, trade
    an equal exchange
    foreign exchange
    the system by which one currency is exchanged for another; enables international transactions to take place
    unitisation, unitization
    conversion of an investment trust into a unit investment trust
    horse trade, horse trading
    the swapping of horses (accompanied by much bargaining)
    type of:
    commerce, commercialism, mercantilism
    transactions (sales and purchases) having the objective of supplying commodities (goods and services)
  7. noun
    a junction of highways on different levels that permits traffic to move from one to another without crossing traffic streams
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    an interchange that does not require left-hand turns
    spaghetti junction
    a complicated highway interchange with multiple overpasses
    type of:
    the place where two or more things come together
  8. noun
    mutual interaction; the activity of reciprocating or exchanging (especially information)
    synonyms: give-and-take, reciprocation
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    mutual exchange of commercial or other privileges
    cross-fertilisation, cross-fertilization
    interchange between different cultures or different ways of thinking that is mutually productive and beneficial
    dealings, traffic
    social or verbal interchange (usually followed by `with')
    (usually plural) mutual dealings or connections among persons or groups
    type of:
    a mutual or reciprocal action; interacting
Word Family

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