No I mean from personal experience, what constitutes a nightmare for you. For instance, what is a common type? I have several common nightmares that I call nightmares. Most nightmares to me are like watching a horror movies but I have those that go above and beyond. For instance, I have a recurring force in my dreams. Where I am doing whatever in a dream and suddenly I feel something. Not physical but I am aware of something, a force. As if it suddenly popped into existence from nothingness. It feel I don't know, evil or just plain wrong. I know it it's coming for me. It's as if it's size is so massive the air pressure increases as it get closers, that is how I know it's coming. In one dream I was hiking through the woods with friends and I started freaking out and running and telling them all to run. They looked at me like I was crazy. The most impactful dream I had with this was I was travelling through a corridor. A long, underground cavern filled with hundreds of doors. I was walking through them and they would lead me somewhere and the next door would take me back to the corridor. I went into one door and I found a smaller door, one I had to crawl through. At the other end was a kitchen, a small fairly dirty kitchen. I walked out of it and there were several doors. I opened one and suddenly I felt that same force, closer than I had ever felt. I ran away more terrified then I had ever been. As I was crawling through the tiny door, which was more like a tunnel I felt my leg get torn off. There was nothing there but I knew it was there. It's as if it was so terrible to view my eyes wouldn't let me see it. I watched the blood pour out of me when someone pulled me out of the hole and I was back in the hallway and I woke up.

I'm glad I haven't dreamed of this thing in awhile.