Cases of word usage

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

2) a small cart with two wheels, pulled or pushed by hand, e.g. one used to sell fruit (barrow)

3) an open space or a building where people meet to buy and sell goods (market)

4) the right or power to choose; something that is or may be chosen; the right to buy and sell at a certain price within a certain period of time (option)

5) to be evident, easily seen; a government authority giving exclusive right to make or sell a new invention (patent)

6) fat talk, e.g. of a person trying to sell something; the sound of quick, light taps or footsteps (patter)

7) to go from place to place trying to sell (things); to give (something) out in small quantities (peddle)

8) (of music) popular; singers and players whose records sell in large numbers and who are popular on radio, TV and in discos; a short sharp, explosive sound (pop)

9) to think, consider, form opinions (without having complete knowledge); to buy and sell goods, shares etc with the hope of profit from changes in their market value (speculate)

10) to sell (goods) at a lower price than competitors (undersell)