A nightmare is a really bad or frightening dream.
'Like being chased by a shark?'
'Yeah, or trapped in a well.'
'Wow, that sounds like a real nightmare.'
What can you do to feel better after a nightmare?
One day I dreamed that I had albums with photos and videos on my tablet, and it was true. But what was not true, was that my mom deleted all my albums except one, and I was screaming and hugging my mom, because I thought it was true. It is only a dream.
That's a scary nightmare, not?
I hope you imagine good things and that you dream very cool dreams!