According to my dictionary, a shovel moves earth and a spade cuts it. With a step for a foot and the handle parallel to the blade, it looks like it was made to cut.
It doesn't look good for lifting sod. The handle would be just above the ground, leaving no room to lever the sod up.
It looks just right for straightening the sides of a trench. A grave needs straight sides. You wouldn't want the casket to jam as it was lowered.