Family Names

어머니 / 엄마 - Mother / Mom

아버지 / 아빠 - Father / Dad

부모님 - Parents

시어머니 - Mother-in-law 

시아버지 - Father-in-law

시부모님  - Parents-in-law 

언니 - Older sister (if you are female)

누나 - Older sister (if you are male)

오빠 - Older brother (if you are female)

형 - Older brother (if you are male)

여동생 - Younger sister

남동생 - Younger brother

자매 - All sisters

형제 - All brothers

남매 - Brother and sister (siblings)

딸 - Daughter

아들 - Son

외동딸 - Only daughter

외동아들 - Only son

할머니 - Grandmother

할아버지 - Grandfather

손자 - Grandson

손녀 - Granddaughter