Of the mind
Words relating to the mind.
Everything that happens inside your head.
When you are asleep, sometimes you dream. Dreams are a little like a movie that plays in your head while you sleep. Sometimes dreams are very ordinary, sometimes they are exciting, and sometimes they are scary. Scary dreams are called nightmares. Often things happen in dreams that aren't possible in real life.
A hallucination is seeing something that is not there, whether it is strange colors around the edges of things or objects and people that are not there at all. People sometimes get hallucinations when they have a migraine or when they take drugs.
A hallucination is not the same as a mirage.
A wish is something you really, really want. Some people wish for possible things, like "I wish I had a better job" but other people might wish for impossible things, like the man in the picture has wished he can fly.