"너" is a Korean word that translates to "you" in English. It is commonly used in informal settings among friends or people of the same age. In the Korean language, addressing someone directly can vary based on the relationship and level of respect, making "너" a casual form of address. In contrast, more formal terms like "당신" (dangsin) or "귀하" (gwiha) are used in polite or formal situations. The choice of words reflects the importance of hierarchy and respect in Korean culture, influencing how people communicate with one another.