Okay, so imagine you have a garden with different kinds of plants in it. Khadir and bangar are two types of soil or earth that you can use to grow these plants.
Khadir is a type of soil that is found in areas where there's a lot of water. It's usually a bit damp and muddy, and it's good for growing crops that need a lot of moisture to thrive, like rice or sugarcane. Khadir is often found along river banks or in areas where there's a lot of rain, and it's very fertile, which means that plants grow really well in it.
On the other hand, bangar is a type of soil that is found in areas that are drier and have less water. This soil is usually harder and more compact, and it's good for growing crops that don't need as much water, like wheat or millet. Bangar is often found in areas where the weather is arid or dry, and it's not as fertile as khadir soil, which means that it can be more challenging to grow plants in.
So, to sum up, khadir and bangar are two types of soil that are found in different areas and are suited to growing different types of crops. Khadir is great for crops that need a lot of water, while bangar is better for crops that can thrive in drier conditions.