What makes BNB unique?

Could you elaborate on what sets BNB apart from other cryptocurrencies? I'm particularly interested in understanding its uniqueness in terms of functionality, its role within the Binance ecosystem, and any innovative features it might possess. Additionally, how does BNB contribute to the overall growth and success of the Binance platform? Also, could you discuss its potential future applications or expansions? I'm keen to know more about the factors that make BNB a standout in the crypto market.