동생 dong-saeng
younger brother/sister
엄마 um-ma
mother
아빠 a-ppa
father
할아버지 ha-lah-buh-ji
grandfather
할머니 hal-muh-ni
grandmother
언니 unni
older sister (girl)
형 hyung
older brother (boy)
누나 noo-na
older sister (boy)
오빠 oppa
older brother (girl)