洪水 和 大水 和 水災 和 洪災 的差別在哪裡？如果不好說明，請提供一些例句。
水災 < 洪水 ≈ 大水 < 洪災
水災 = Flood that causes damages, no matter the damage is huge or minor.
大水 = Large amount of water. Flood or even deluge. Normally used in Hokkien (Taiwanese).
洪水 = Deluge, but may not cause damage.
洪災 = The delude that causes damage.
水災 = Flood that causes damages, no matter the damage is huge or minor.
大水 = Large amount of water. Flood or even deluge. Normally used in Hokkien (Taiwanese).
洪水 = Deluge, but may not cause damage.
洪災 = The delude that causes damage.
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