Are BSC and BNB the same?

Hello there, could you please clarify something for me? I've been hearing about BSC and BNB quite frequently in the cryptocurrency world, and I'm a bit confused about their relationship. Are BSC and BNB actually the same thing, or are they two distinct entities? If they're different, what are the main differences between them? And how do they interact with each other in the crypto ecosystem? I'd really appreciate it if you could help me understand this better.