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Unlike English, Korean words DO NOT have stressed syllables. So when you speak Korean words, NEVER speak the way you speak English words. It will sound pretty strange. It doesn't matter whether the word is homonym or not.
7. 가지 (meaning a twig, a kind, or an eggplant) → NOT 가지 and 가지
8. 화기 (meaning mild weather, firearms, a fire container, or anger) → NOT 화기 and 화기
9. 내리막 (meaning a downhill, or a decline) → NOT 내리막, 내리막 and 내리막
Intonation is the rise and fall of the pitches. It show's one's emotions such as happiness, sarcasm, anger, sadness, or surprise, etc. Good intonation will make people more interesting to listen to your speech, and will also make listeners understand more easily. However! Korean has a very simple intonation rule. Except questions and statements are all non-final intonation.
Raise your voice at the end of a question.