A cloth filter is kind of like a big strainer that's made out of fabric instead of metal. Just like how you might use a strainer to separate noodles from water, a cloth filter is used to separate things from liquids too. But instead of separating noodles, a cloth filter is used to separate small particles like dirt or coffee grounds from liquids like water or coffee.
The cloth filter is made by weaving together threads or fibers to make a mesh or net-like material. The holes in the mesh are small enough to catch the particles you want to remove, but big enough to let the liquid pass through. The filter can be made of different types of fabrics depending on what you're trying to filter.
For example, if you're making coffee, you might use a cloth filter that's made from cotton, hemp, or linen. The fabric is sometimes called a coffee sock or a cloth coffee filter. The coffee grounds are put into the filter and then hot water is poured over them. The liquid (coffee) drips through the cloth and into a container below, while the grounds are left behind in the filter.
After the filter is used, it needs to be washed to remove the trapped particles. Then it can be used again and again, saving money and reducing waste. However, eventually the filter will wear out and need to be replaced.
So in summary, a cloth filter is like a fabric strainer used to separate small particles from liquids. It can be made of different fabrics and is commonly used in things like making coffee or filtering water.