언니 (Unnie) vs 누나 (Noona): What's the Difference?
After this page, you can choose correctly between 언니 (Unnie) vs 누나 (Noona) depending on the situation.
10-Second Answer
Both 언니 (unnie) and 누나 (noona) refer to an older female you're close to. The choice depends only on who is speaking: female speakers say 언니, male speakers say 누나.
The One Rule
| Speaker | Older female is called… |
|---|---|
| Female | 언니 (eonni) |
| Male | 누나 (nuna) |
(여성) 언니, 밥 먹었어요?
eonni, bap meogeosseoyo?
(Woman) Unnie, have you eaten?
(남성) 누나, 밥 먹었어요?
nuna, bap meogeosseoyo?
(Man) Noona, have you eaten?
Identical sentence — only the speaker's gender changed the word.
Same Person, Two Names
A female fan calls the idol IU "아이유 언니"; a male fan calls her "아이유 누나." Siblings do the same with their own older sister — the younger sister says 언니, the younger brother says 누나.
Nuance Differences Worth Knowing
- 언니 has an extra colloquial use: women addressing female staff at shops and salons, regardless of actual age.
- 누나 carries the "noona romance" flavor in dramas — an older woman with a younger man — though by default it is not romantic.
- Both words imply closeness; neither is for female strangers (저기요 is the neutral call).
How Do You Know Who's "Older"?
Korea officially switched to international age (만 나이) in June 2023 — but deciding who's the 언니/누나 in a friendship still runs on the older, customary way of comparing seniority, usually by birth year (몇 년생이세요?) rather than the legal current age. That gap between the legal number and the social habit is exactly why this address-term system is still so alive — see the Korean age system page for the full explanation.
The Full 2×2 System
| Older male | Older female | |
|---|---|---|
| Female speaker | 오빠 (oppa) | 언니 (eonni) |
| Male speaker | 형 (hyeong) | 누나 (nuna) |
Mini Quiz
1. A male fan wants to address the older female idol he admires. What does he say?
2. A woman calls the salon staff member 언니 even though the staff is younger. Why?
3. Complete the grid: male speaker → older male: ___ / female speaker → older male: ___
Related Knowledge
Learn Next
오빠 vs 형: What's the Difference?
The other half of the 2×2 grid — same speaker-gender logic applied to older males.
Will you remember this tomorrow?
Add it to your review queue — the daily session brings it back before you forget.
Start today's study →Last updated: 2026-08-10 · Written and reviewed by a native Korean speaker.