The question as written is appropriate for RPG.SE, and doesn't require any change. Although the question could be directed to other Stacks, it is acceptable given our current guidance. Currently it's unknown what exactly is motivating the question, which leads to differing perspectives on how to fix it.
Full disclosure: I am one of the users who answered that question.
The scope is appropriate.
The current question is scoped appropriately. It isn't asking for all terms from all games, or even a set of terms with a given property. The querent's statement that information from any RPG or setting is a (loose) constraint, not a part of the scope of the question.
Does it belong here?
Our Help page explains:
Questions about a general real-world topic such as history, geography
or economics, whilst relevant to RPGs, may be off topic if they are
not RPG-centric (or better belong on another Stack Exchange site, such
as History). A good rule of thumb is to ask yourself:
Would an RPG expert give me a better/different/more specific answer to
this question than a Historian, Geographer, etc?
If yes, then feel free to ask it here.
This question could be on topic on World-building, ELL, or a number of other stacks. However, insofar as the querent is interested in advice that is specific to the RPG community and informed by our norms and needs, then it is appropriate to remain here.
Improving the Question
Basically we know what OP wants, but not why.
Is the problem that the players are misinterpreting what is happening? Do they direct their characters into a den of bugbears expecting a human settlement? Is their current communication functional, but socially awkward? Are they concerned about the post-structuralist criticisms of defining personhood in relation to any particular group?
If the querent were more specific about the practical problem they are running into, then we could provide better tailored advice.