Is the BNB beacon chain the same as BNB?

Could you please clarify the distinction between BNB and the BNB beacon chain? Are they interchangeable or do they serve different functions within the Binance ecosystem? Is the BNB beacon chain a separate entity from the BNB token, and if so, what are its primary purposes and how does it relate to the broader Binance platform? Understanding the nuances between these two terms is crucial for navigating the world of cryptocurrency, and I would greatly appreciate your insights.