동생, 잘 지내? (dong-saeng, jal ji-nae?)
여동생 = sister
It is Sister in Korean ^-^
noona for elder sister 누나- that is how you right it
Older sister coming from a female - "Eon-nie" Older sister coming from a male - "Noo-na" Younger sister coming from both gender - "Dong-saeng"
바쁘세요 = are you busy
Older sister but it doesn't have to be your real sister. it could be any older girl that you consider her as close to a sister
In Korean, "sister" is said as "언니" (eonni) when referring to an older sister and "여동생" (yeodongsaeng) for a younger sister. "Brother" is "형" (hyeong) when referring to an older brother and "남동생" (namdongsaeng) for a younger brother. These terms reflect the importance of age hierarchy in Korean culture.
There are some but not many words that can be used in place of small sister. Younger sister can be used in place of small sister. As can little sister.
dangsin-ui yeodongsaeng eul mesinjeo
Older Sister (addressed by female).
In Korean, "omi" (엄이) means aunt on your mother's side. It is the term used to address and refer to your mother's sister.
yeo-dong-saeng