Coarse structure is like a big puzzle with lots of pieces that are put together to create a bigger picture. Just like how you might have a puzzle with lots of small pieces, a coarse structure is made up of lots of smaller parts that come together to create a bigger whole.
Think about a house made up of many rooms, doors, windows, and walls. The house is the big picture or coarse structure, while the rooms, doors, windows, and walls are the smaller parts that make it up.
When we look at something with coarse structure, we focus on the bigger picture and how the smaller parts fit together to create that picture. This can help us understand how different things in the picture relate to each other and how they all work together.