It is not possible to trademark or copyright an idea. If it was, there would not be the proliferation of price comparison websites that exist.
What you have to make sure is that you do not get accused by the owners of monopoly, with passing off.
Passing off is what happens when you try to cash in on the reputation and name awareness of and manufacturer or supplier.
If anyone looked at the board game and thought “this looks like Monopoly but with words” it could be a breach of their intellectual property and hence, you have to make sure that it looks completely different.
Please rate the service positive. It’s an important part of the process by which experts get paid.
I can still clarify things for you.