Is BEP2 the same as BNB?

Excuse me, I'm a bit confused about something. Could you please clarify whether BEP2 and BNB are interchangeable terms? I've been hearing about them both in the context of cryptocurrency, but I'm not sure if they refer to the same thing or if there's a distinct difference between them. It would be really helpful if you could explain the relationship between BEP2 and BNB, and perhaps elaborate on any key differences that might exist. Thanks in advance for your assistance!