The following are my own views, anyone on the list is invited to make their own comments. Here I wonder what criteria you use. We both look at a table. This is a table.
Meaning is use.
However, there are more interesting things of note. In the larger scope of actual reality, meaning is a composition of several of these very small worlds that I've offered, so our conclusions are more complicated. The example of the person and his brother only depicts a small world. If we take this small world in small scope, we conclude that both speaker and listener have the same understanding. But this is not the case.