Shading is minimized and the form of an object is only partially indicated with much of the form treated as a flat surface. This minimization of form can act as a slight abstraction that removes the viewer from experiencing the painting/ drawing as an immersive reality.
If an individual character is rendered with minimal shading, while others are fully rendered, an artist might be pointing to a lack of substance in the more flattened character. A prominent character's higher status might be emphasized by being more completely rendered, while the form of other characters is only minimally indicated in order to deemphasize their importance within the scene.
Featured: Maharaja Sardar Singh of Bikaner by Chotu.