v.
 give something and receive something else in return.
n.
     - an act or the action of exchanging.
- a short conversation or argument.
- the changing of money to its equivalent in another currency. ▸a system or market in which commercial transactions involving currency, shares, etc. can be carried out within or between countries. ▸a building or institution used for the trading of commodities. 
- a telephone exchange.
- Chess  a move or sequence of moves in which both players capture material of comparable value.
Phrase
  
    
      - exchange contracts
 Brit. (of a buyer) sign a legal contract with the vendor of a property or piece of land, making the purchase legally binding and enforceable.
 
  Derivative
  
    - exchangeability n.
- exchangeable adj.
- exchanger n.
 
  Etymology
  ME: from OFr. eschange (n.), eschangier (v.), based on changer (see change).