Yes! In the US, cornmeal is comprised of many different kinds of ground corn, from white corn, to yellow, to blue. Then, it is categorized by grind, be it fine, medium or coarse. All of these grinds will weigh differently per volume, so even without knowing variety, you can see how the Monash University and FODMAP Friendly smartphone app entries lack information that we need.   The various grinds have various uses:   Fine Ground Cornmeal: This type of cornmeal has a finer texture and smoother consistency. It's often used in recipes where a smoother texture is desired, such as for making cornbread, muffins, pancakes, and some baked goods. Fine ground cornmeal produces a softer and less gritty texture in finished dishes. In the US it might be called corn flour, as seen on the package in the image below.   Medium Ground Cornmeal: Medium grind cornmeal has a slightly coarser texture compared to finely ground. It retains some of the natural graininess of the corn and is commonly used in dishes like polenta and certain types of bread. It can provide a heartier texture and a more pronounced corn flavor.   Coarse Ground Cornmeal: Coarse ground cornmeal has the largest granules and the most pronounced texture. It's often used for making dishes like Southern-style cornbread, where a rustic and crumbly texture is desired. Coarse ground cornmeal can also be used for breading and frying foods, as its texture adds a delightful crunch.   These categories are not strictly standardized, and the exact definitions of "fine," "medium," and "coarse" can vary from one producer to another. Some brands might have variations within these categories as well. The choice of cornmeal grind depends on the intended use and the desired texture in the final dish. In our image below we show, left to right: conventional supermarket cornmeal; finely ground corn flour; cornstarch (in front); medium grind cornmeal; coarse grind cornmeal. I chose several Bob's Red Mill products so that you could see how one manufacturer differentiates. The cornstarch is center bottom of image.