What are nightmares and how are they different then night terrors?

Nightmares are vivid, disturbing dreams that typically occur during the REM (rapid eye movement) sleep stage and can cause feelings of fear, anxiety, or distress upon waking. They often involve scenariOS that are frightening or threatening, and individuals usually remember them. In contrast, night terrors occur during non-REM sleep, usually in the early part of the night, and involve intense fear, screaming, or thrashing while the person remains mostly unresponsive and typically has no memory of the episode afterward. While both can be distressing, nightmares are remembered and occur during a different sleep stage than night terrors.