What is the difference between kosher and sea salt?

Kosher-

usually has no additives, has big crystals with large surfaces, which allows it to absorb more moisture. There isn’t much difference between kosher and table salt, although it does not provide iodine. The human body needs salt to regulate the electrolyte balance inside and outside of its cells. Of course, there are always discussions as to how much extra salt we need in our diet.

Sea Salt-

Actually not quite as “salty” as table salt, so recipes may have to be adjusted for taste. Generally more expensive, some say the additional cost is not justified.
I use kosher salt and sea salt, but I tend to use kosher more, I use it in baking and cooking. I probably won’t replenish the sea salt when it runs out. Mainly because I don’t like having to buy so many different types and then I need a place to put them. Sea salt is available in coarse and fine. Kosher is coarse.