What is hello in korean?

In Korean, "hello" can be translated as "안녕하세요" (annyeonghaseyo) or simply "안녕" (annyeong). It is commonly used as a greeting when meeting someone for the first time or when entering a room. Koreans also use casual versions of greeting such as "안녕" when speaking to friends or people of the same age. The word "안녕" can also be used as a farewell when saying goodbye to someone.