The phrase "both...and" is a conjunction used to connect two related ideas or items, emphasizing that they are equally important. It highlights the coexistence of two elements, suggesting that they can be true or valid at the same time. For example, one might say, "She is both a talented musician and a skilled painter," indicating that both skills are significant aspects of her identity. In logic and reasoning, "both...and" can be used to present multiple truths or facts simultaneously. This structure helps to clarify complex situations by acknowledging that two different perspectives or attributes can exist together. For instance, "The project is both challenging and rewarding" conveys that while the task may be difficult, it also offers valuable benefits.