The term 'CITRUS' is a 6-letter word that can be used to describe both the orange and the lime. CITRUS fruits are a type of fruit that belong to the genus CITRUS, which includes oranges, lemons, limes, and grapefruits. They are known for their sweet and sour taste, and are often used in cooking and baking. CITRUS fruits are also a great source of vitamins and minerals, making them an important part of a healthy diet.