Which BNB is BEP2?

Could you please clarify for me which BNB specifically refers to BEP2? I've been trying to understand the different types of Binance tokens, but I'm a bit confused about the distinction between BEP2 and other variations. Is BEP2 a specific version of BNB, or is it related to another aspect of Binance's ecosystem? Could you provide a brief explanation of what BEP2 stands for and how it differs from other tokens within the Binance platform? Thank you for your assistance in clearing up this confusion.