What is the difference between malls …

A shopping Centre is usually a large building with many small shops inside. It typically will have two or three floors with several large stores on the ends. These stores are connected to each other, but do not have a centralized internal access for the public. The centers also do not offer additional activities such as gaming area, play area, amusement park, etc. 

Shopping malls or malls are large enclosed spaces that are often characterized with many stores that sell merchandise to the public. This could be an open air shopping area where people can walk outside from store to store. The malls are enclosed and have centralized cooling or heating. The malls also have many different stores that sell many different kinds of merchandise, including food, jewelry, clothes, specialized stores, watches, etc. Shopping malls have gaming area, play area, amusement park, etc.