붓 is a traditional writing instrument used in East Asian cultures, primarily made from animal hair, bamboo, or synthetic materials. It is commonly associated with 서예 (calligraphy) and is used to create beautiful characters and artistic designs. The brush's flexibility allows for varying stroke thickness, making it ideal for expressive writing. In addition to calligraphy, 붓 is also used in 수채화 (watercolor painting) and other forms of art. Artists appreciate its ability to hold water and pigment, enabling smooth and fluid brushstrokes. The technique of using a 붓 requires practice and skill to master, contributing to its cultural significance.