Well, it's not a straightforward yes. Some DC movies are direct adaptations of comic stories, but others take elements from multiple comics or even deviate significantly to offer a fresh take on the DC universe.
Yes. In DC Comics Ghost Stories, the characters often have abilities related to the supernatural. For example, they might be able to control ghosts or have powers that are enhanced by the presence of spirits, which is different from regular DC characters who mainly have powers like super strength or the ability to fly.
Not all DC Comics novels are suitable for all ages. Some, like 'The Dark Knight Returns', have a darker and more violent tone that might not be appropriate for very young readers. However, there are also many that are family - friendly, like some of the Superman stories.