I must thank you for the explanation in your answer to my question. 

And since I personally detect a slight reproach in your answer: Yes, of course, you can come up with new keys. 

However, we try to use British English for key names, as it appears to be a reference to a data source in LV (which usually leads to the prefix ref:LV:) and and. 

You can document this ambiguity with a comment under the key note or ask the local community (which has already been offered). 

I must apologise for overlooking this: *Welcome to OSM!* The important thing is to still have fun with OSM, even if someone comes along and asks how to understand the key. :)