The content of artArt refers to a diverse range of human intellectual and expressive activities and the outcomes of those activities. Within this context art is further defined... is the meaning, message, and/or feeling imparted by a work of art.
Content is inextricably linked with formForm refers to three dimensional objects. While shapes have two dimensions (height and width), forms have three dimensions (height, width and depth). The overall unity..., which refers to the pictorial aspects of art.
In an artwork, the subject matter is what the image literally depicts. The content of the artwork is what the image means.