USDQ is a decentralized stable coin, which is backed by bitcoin and pegged to the dollar, so 1 USDQ = $1 USD.
Binance USD (BUSD) is a stable coin pegged to USD that has received approval from the New York State Department of Financial Services (NYDFS). BUSD will be available for direct purchase and redemption at a rate of 1 BUSD = 1 USD.