Korean kinship terms can depend on who is speaking, the exact family branch, gender, generation, marriage, and whether you are speaking directly to someone or describing them. Familiar words such as 오빠, 언니, 형, and 누나 are therefore relationship-specific rather than generic labels for older people.

Extended-family and in-law terminology can become much more specific. When the information provided does not identify one reliable term, K-MANNER deliberately recommends checking the exact relationship or family convention instead of inventing a universal answer.