What is the difference between BNB and BSC network?

Can you clarify the distinction between BNB and the BSC network for me? I understand they're both associated with Binance, but I'm unsure of the specific roles they play and how they differ from each other. Is BNB a cryptocurrency, while BSC serves as a blockchain platform? Or do they work together in some way? I'd appreciate a concise explanation that highlights the key differences between the two.