Have you ever thought about words and what they mean? Many words have several different meanings depending on the context in which they are used. For example take the word “salt”. ‘Salt’ is commonly used to refer to one specific kind of salt, called sodium chloride (NaCl) or table salt. However, because salt has an important place in our history there are also a number of phrases using the word salt with different meanings than ‘sodium chloride’. For example you might have heard “take it with a grain of salt”, “to be worth one’s salt”, or to “salt away for future use”.
Sometimes the words “salt” and “sodium” are used interchangeably. For example, when dietitians and doctors talk about salt they are probably referring to sodium.
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