What's the difference between heavy cream and heavy whipping cream?

Some baking recipes call for heavy cream or heavy whipping cream. What's the difference? Usually, to avoid wasting a lot of energy on figuring it out, I just buy already made products. But, I might actually save some money if I knew the answer to this question.

 

There are differences in milk-fat content. All cream contains at least 18 percent milk fat: "whipping cream" is made up of 30 percent, while cartons labeled "heavy cream" or "heavy whipping cream" must contain 36 percent or more. Whipping cream, heavy cream, or heavy whipping cream all work for recipes that incorporate whisked air, but don't reach for that half-and-half; at 10.5 to 18 percent milk fat, it simply won't cut it. The more fat content a cream contains, the more stable it's likely to be in a whipped state.
(From YumSugar)