That's not quite right. While erosion is a big part of the process, it's not the complete picture. Here's a breakdown:

* Erosion: This is the process of wearing away and transporting Earth's surface materials (like rocks, soil, and sediment) by natural forces like wind, water, ice, and gravity. Think of it as the process of "breaking down" the Earth's surface.

* Sediment: This is the broken-down material that results from erosion. It can be anything from sand and gravel to clay and silt.

So, while erosion is essential for creating sediment, it's not the same thing as the breakdown of Earth into sediment.

Think of it this way:

* Erosion is the action of breaking things down and moving them.

* Sediment is the result of that action, the broken-down material itself.

Let me know if you have any other questions!