Black holes are regions in space where gravity is so strong that nothing, not even light, can escape. They are formed when the remnants of a massive star collapse in on themselves, creating an incredibly dense object.
Dark matter is a theoretical type of matter that is not directly observed, but is believed to exist based on its gravitational effects on visible matter. It makes up a significant portion of the universe, but its nature and composition remain a mystery.
While black holes and dark matter both involve gravity and are components of the universe, they are distinct entities.