What is the difference between chlorine and chloride?

Chlorine is an element that takes the form of a diatomic gas (Cl2).

Chloride is the ion formed by chlorine it is a monatomic ion with a -1 charge (Cl-). Most chlorides (substances containing the chloride ion) are solids.

Chloride is a by-product of the reaction between chlorine and an electrolyte, such as potassium, magnesium, or sodium, which are elements that are essential for human metabolism. Elemental chlorine is a dangerous gas. Because it is so reactive, it does not exist in its free elemental state in nature, although it is common in compounds with other elements. One of the most common chlorine compounds is common table salt, sodium chloride. Chloride salts are essential for sustaining human metabolism and have none of the toxic effects of isolated chlorine gas. Your body can safely use chloride without negative health effects.The negative health effects that have been associated with diets high in chloride, such as fluid retention and high blood pressure, are mainly attributable to the accompanying sodium and potassium.