Can "nullptr" fully replace "NULL" in C23?

Question

Is NULL fully interchangeable with nullptr in C23? Are they used in separate scenarios?

I'm coding a game, and there are moments where I've used NULL and others where I've used nullptr. I initially started with a C99 approach, but after seeing all the new features of C23, I decided to switch. However, some parts of my code still use the old NULL, and I've been wondering if there might be any issues replacing it with the new nullptr to avoid memory leaks or other problems.

I asked chatgpt about it but it still keeps thinking nullptr is only C++ stuff.