What is the difference between BNB BNB and BNB BSC?

Could you please elaborate on the key distinctions between BNB BNB and BNB BSC? I'm curious to understand the fundamental differences in their functionalities, uses, and the role they play within the cryptocurrency ecosystem. Additionally, how do these differences impact investors and users? Would it be possible to provide a concise comparison, highlighting the main points of contrast? Thank you for your assistance in clarifying this matter.