The word "popover" refers to a light, puffy pastry typically filled with a sweet or savory mixture. However, there are other terms that can be used interchangeably with "popover" depending on the region or specific recipe. For example, in the United Kingdom, popovers are commonly known as Yorkshire puddings and are often served with gravy. In France, a similar pastry is called a gougere, which is typically filled with cheese. Another option in North America is the Dutch baby pancake, which is a similar recipe but cooked in a skillet and often served with fruit or syrup. Ultimately, there are many different names and variations of the classic popover recipe to explore and enjoy.