Do names even matter?

For all I know tomorrow a table could be called a hat, and instead of saying, "Hey! Stop moving the table! I'm writing" I would be saying,  "Hey! Stop moving the hat! I'm writing" In the first place, the names for objects were made so that people could say, for example, "I found this table lying around" and know what the other person meant. If that wasn't too clear enough, its basically so that different people from different backgrounds can relate an object with one common word so that communication of ideas is easier. However, this isn't always effective as the language barriers and even cultural barriers can make the names given to objects be different. For example, when Valeria first came to the school, she had a bit of 'trouble' with making her point across as there were certain "peruvian words" that were different from the Ecuadorian ones. For instance, here in Ecuador we call a sharpener "sacapuntas" (if you defragment the word its basically 'to get out the tip of the pencil'). Meanwhile, in Peru they call it "tajador" (when defragmented it is 'to cut away'). Still, even though the words are quite different in both countries, it doesn't mean that the objects themselves are different in any way whatsoever - they still sharpen the pencils and do what they're supposed to do. 

Its the same with the idea of changing the name of a rose. No matter of what name you label it with, it will still have its natural attributes of smell, sight, touch and its symbolism would still be the same. In other words its essence would carry on. In class we were given a quote from Shakespeare's Romeo and Juliet which is spot on to explain this idea:

Juliet:

"What's in a name? That which we call a rose

By any other name would smell as sweet." - Romeo & Juliet, William Shakespeare, Act 2, Scene 2 

In this case, it wouldn't matter if Romeo Montague would suddently change his surname to Romano as he would still be the same person whom Juliet has fallen in love with. The only issue that they have in the play is how the different families are full of prejudice as the immediately judge the other family because of the acts of one of the members or by past actions. Therefore, in the play it can be shown how these families had grown so attached to the ideas and relationships between the "supposed" way of acting of the other family and the surnames. This could be a link to what we learnt in class as, nowadays, it would be quite difficult to change people's ideas of what objects should be named as, showing the attachment people have to words after many centuries of using these to refer to the different things in the world.