商场 (shāngchǎng) means "shopping mall" or "department store," referring to a large commercial building with many shops. It is one of the most common words for describing retail spaces in Chinese. For example, 在商场外排队 means "lining up outside the shopping mall."
周末我们去商场逛逛吧。
Zhōumò wǒmen qù shāngchǎng guàngguang ba.
Let's go hang out at the mall this weekend.
这家商场里有很多好吃的餐厅。
Zhè jiā shāngchǎng lǐ yǒu hěn duō hǎochī de cāntīng.
There are many good restaurants in this mall.
商场外面排着长长的队伍。
Shāngchǎng wàimiàn páizhe chángcháng de duìwǔ.
There's a long line outside the mall.