The real world as a source of inspiration
Both styles were aiming at a direct, unadulterated view of reality. And both styles mark the dawn of modernity, characterized by painting in the wild and dealing with subjects of daily life, such as dancers, portraits of friends and family, people in nature, or city scenes, such as Otto Dix’s “Street Lights” (1913).
Article source: http://www.dw.de/impressionism-meets-expressionism/g-18476877