The clothing departments are located on the third floor of this department store.

departments 是 department 的复数形式，department 来自法语 département，由前缀 de-（表示"分离"）和 part（"部分"）组成，本义是"分开的部分"。 在商业环境中，department 特指"部门、专区"，如百货商店中按商品类别划分的销售区域。clothing departments 就是指"服装销售区/服装部"。