| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | diphthong | Korea | Less commonly known concept, as the languages in these countries have simpler vowel systems with fewer diphthongs. | 1 |
| 2 | pronunciation | South Korea | Pronunciation carries a strong emphasis on maintaining the purity of language, and deviations are often frowned upon in formal speech. | 1 |