Steem Dollars are liquid stable-value currency tokens designed to be pegged to $1 USD. Steem Dollars can be traded with STEEM and transferred to other accounts for commerce or exchange.
NuShares are units held by individuals who wish to help support and maintain the Nu network. Owning NuShares is not required to use NuBits. Instead, NuShares are intended to be a source of network equity for developers, entrepreneurs, and speculators. NuShareholders can receive network revenues in the form of Peercoin dividends paid out by a custodian. NuShareholders can cast votes for actions that positively affect the Nu network. These actions help adjust the supply and demand for NuBits so that they will always remain at a long-term USD 1.00 value.