A black hole and a white hole are two hypothetical objects in theoretical physics, but they are fundamentally different in nature.
A black hole is an object with an extremely strong gravitational pull, formed from the remnants of a collapsed massive star. It has a region called the event horizon, beyond which nothing, not even light, can escape its gravitational pull. Anything that crosses the event horizon is thought to be trapped within the black hole's singularity, a point of infinite density at its center.
On the other hand, a white hole is a hypothetical region of space-time that is the reverse of a black hole. While a black hole pulls matter and energy inward, a white hole is envisioned as an object that expels matter and energy outward. It is like an "anti-black hole" where matter and energy can only leave and never enter.
It is important to note that white holes are purely theoretical and have not been observed or confirmed to exist in nature. They are primarily studied within the framework of general relativity and are often used as mathematical constructs to explore the properties of space-time.
If someone were to hypothetically fall into a white hole, according to current understanding, they would not be able to enter it. The white hole's nature is such that anything approaching it from the outside would be repelled or expelled. However, since white holes are hypothetical, our knowledge about their behavior and their interactions with matter and energy is highly speculative. The concept of white holes remains an area of active research and speculation in theoretical physics.