Woud someone tell me if there is a difference between "Potassium" and "Potassium Chloride?" Or are they one in the same when mentioned in an article? I've read some articles that mention "potassium," and others that mention "potassium chloride."

Some say "most of the potassium chloride you see in your daily life occurs naturally in foods." Is that true? And - "Potassium (are they talking about Potassium Chloride) is an essential nutrient we get from the food we eat. It typically comes in the form of potassium chloride." Is that true? Are they referring to "potassium" or "potassium chloride?" Or as I asked, are they one in the same?

Nu-Salt (Salt Substitute) says: "Ingredients": "Potassium Chloride." And the "Nutrition Facts" say: "Potassium 530mg." Are they both referring to the same thing? Why do they mention "Potassium Chloride" and then mention just "Potassium?" Are they talking about the same thing when they say "Potassium" and "Potassium Chloride?

Hope I have not made this too complicated.