Common market is a Marketplace where people can buy-sell is made the same as the supermarket or department store is a place in the world that really need to be able to buy/sell items.
Marketplace is a typical market where people are used to buying - selling well, such as malls or supermarkets such. A place in the real world To travel is to be able to trade goods.
Marketplace market is general to people that were bought and sold, such as department store or supermarket, the place in the real world. To go out to be able to trade goods.