Examples here: Does the "@" symbol have a name? Edgar Gonzalez asks specifically for a one-word name.
What do you call a noun that precedes and describes another noun? In addition to the original question, Acorn asks if it is still a noun or adjective.
This can be solved by adding an answer in the first, authentic question. This answer can cover the subtleties of the borderline duplicate. However this creates other problem because you risk writing about things that stray away from the original question.
-the moderator adds "possible duplicate" next to the link, but this contradicts the "exact duplicate" official reason
-users can have different opinions about whether it is nuanced or not. It's a matter of how you understand the language.