system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do marketers sometimes brand their products with a "Z" at the end instead of an "S" (Chicken nuggetz, etc.)?
gpt
Because "nuggets" is a regular word and cannot be claimed for exclusive use as a trade name. "Nuggetz" is not a regular word and can be claimed for only their use, distinguishing their product from others.