Okay kiddo, so you know how in some stories there are bad guys, right? Well, in some beliefs, people think there are bad spirits called demons that can be really scary.
Now, these demons can be classified into different groups based on different things. For example, some people believe demons can be grouped based on the ways they cause harm. Some demons might just give you a little scare, but others might make you really sick or even possess you!
Another way demons can be grouped is based on where they come from. Some people think demons are fallen angels - angels who were once good but turned bad. Others believe demons are the spirits of really bad people who have died.
There are even demons that can be grouped based on what they represent. For instance, some demons might represent things we consider bad, like greed or envy. Others might represent darker powers like death or destruction.
Overall, classification of demons is just how different groups of people try to understand and define these scary spirits. But remember this kiddo- These are just stories, and there is no scientific proof that these demons truly exist.