one kind of dream is the kind you have when you sleep, or just daydream, they are usually made from things you think Abt a lot. Then theres dreams, like you Dream of being a therapist when your older, its like a wish sort of thing, not the kind you have when you sleep.
Example of dreaming(sleep): Last night I had a dream that I chased a cat around a planet. Example 2(wish sort of dream): My dream is to be a doctor when I grow up