Englishfor English speakers
acid
Noun
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An acid is a liquid with a high number of hydrogen ions in it that can burn things.
Fruit often has a little acid in it.
The acid burned the table.
Acids taste sour but bases taste bitter.
acid
Adjective
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If something is acid, it is like an acid, from an acid, or acidic.
The factories nearby have made the lake more acid.
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If something has an acid taste, it is sour.
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If something said or done to you was acid, it was hurtful.
Their acid comments are painful.
heat
Noun
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Heat is a kind of energy. It is the quality things have when they are warm or hot.
This is a good coat. It keeps the heat in.
The heat from the sun is making me feel hot and tired.
heat
Verb
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To make something hot.
I just need to heat up the food and then we can eat.