Cases of word usage

1) an agreement to buy, sell or exchange something (often made after discussion) (bargain)

2) to exchange (goods, property etc) (for other goods etc) (barter)

3) (to cause the value of a currency) to become less (especially in exchange for other currencies) (devalue)

4) the quality of being able to move or stretch a little; to present (something) to another person without being paid or receiving anything in exchange (give)

5) a place where roads join a motorway etc; (an instance of) the exchange of ideas, methods etc (interchange)

6) a large public gathering for a political or social cause; (in tennis) an exchange of several strokes (rally)

7) to be fully conscious of, understand, (something); to exchange (property, business shares etc) for money (realize)

8) to put another price on (something); to increase the exchange value of (money) (revalue)

9) an exchange of goods or property for money; act of selling (sale)

10) to give (something) in exchange of money; to persuade (a person) to agree, accept (an idea etc) (sell)