The painting depicts a mother playing with her child in the park.

depicts 是动词 depict 的第三人称单数形式，depict 来自拉丁语 depingere，由 de-（完全地）和 pingere（画）组成，意思是"描绘、刻画"，指用绘画、文字等方式表现某个场景或形象。