Can I convert BTCB to BTC?

Could you please explain to me if it's possible to convert BTCB to BTC? I've been hearing about these two cryptocurrencies quite often and I'm a bit confused about their relationship. As I understand, BTCB is a wrapped version of Bitcoin on the Binance Smart Chain, but I'm not entirely sure how to go about converting it back to BTC. Could you please elaborate on the process? I'm also interested in knowing if there are any fees involved in this conversion, and whether it's a straightforward process or involves some complexities. Your insights would be greatly appreciated.