This gives an overview of the scene to get a wider perspective of whats happening.We may not see close up to details but we can view everything from a top angle which puts us in a God like perspective looking down on the scene.
Focuses extreamely close to a specific detail to give the onlooker information and magnify details that we normally wouldn't notice to imply something.
This shot is positioned often on ground level looking up at the scene which makes the viewer feel small or inferior in comparison to the object/person.
Focuses on a certain character so that we can draw attention to their movements and facial expressions so we are informed on what type of persona they portray.