Gene nomenclature is like giving names to all the different genes in our bodies. Just like you have a name, every gene has a name too!
Scientists use special rules and guidelines to make sure that the gene names make sense and can be easily understood by other scientists around the world. This is really important so that they can all talk about the same genes in the same way, and not get confused.
Sometimes genes have weird or complicated names, but that's just because they were named after what they do or where in the body they were first discovered. For example, the gene that makes insulin, which helps control our blood sugar levels, is called INS. We know it's named that way because it's responsible for making insulin.
Having good gene names helps scientists to study and understand how our bodies work, and how things can go wrong in diseases like cancer or diabetes. It's like having a map of all the different parts of our bodies, and being able to see how they all fit together.