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Water that is "hard" contains a certain amount of dissolved minerals (like calcium and magnesium). 
Water that is "soft" is a certain type of treated water. It contains only one type of ion, which is sodium. An example of this is rainwater because it is naturally soft water.

Answer:

Hard water... is water that contains an obvious amount of broke down minerals (like calcium and magnesium). Delicate water... is dealt with water in which the main particle is sodium. As water falls, it is normally delicate. ... Then again, delicate water tastes salty and is some of the time not reasonable for drinking.

Explanation:

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