The two ways Giotto's painting "The mourning of Christ" differs from the work of his predecessors are:
1.- The inclusion of false textures.
2.- Group composition.
Explanation:
The first reason that made Giotto's painting "The mourning of christ" differ from the work of his predecessors is that, false textures were not used since the early Christian times. Therefore, he re-introduced this element to make his work unique. Second, Giotto also unified composition by creating large groups with equal elements and quality that allowed them to create a consistent composition.
His figures seem to occupy a real space, and we seem to be witnessing a real event as if the figures were acting it out on a stage. Giotto shows us convincingly how each figure reflects the grief of the tragic scene.