The term BLACK OR GREEN BEVERAGE can be solved by the three letter word TEA. TEA is a popular beverage that has been consumed for centuries and is made from the leaves of the Camellia sinensis plant. It is usually served hot, but can also be served cold. TEA can be prepared in a variety of ways, including black TEA, green TEA, oolong TEA, and white TEA. All of these types of TEA are made from the same plant, but the differences come from the way the leaves are processed. Black TEA is fully oxidized, while green TEA is not.