Each exchange is surrounded by a group of enterprises that use it to buy and sell.

"I used to travel Japan and sell when we exported in that marketplace," he said.

Yet, according to much of the advertising used to promote and sell these products, that's exactly what should happen.

An independent record label is a company which musicians can use to make and sell records.

Population used to hack it all out and sell it.

To earn his living, he used to cut a kind of grass called Kanampul and sell it in the market.

It was known that the Jews used to make alcohol and sell it to the public.

They hope to use them to gather and sell data about the most effective treatments for various diseases.

People used to pan these and sell them to the rich.

"I used to draw the boats that sit out on the bay and sell them to the boat owners," he said.