Playing with words, Darwin

We talked in class the other day about memes the their origin in social constructs.  I found it particularly interesting that memes, while removed from primal biological sources, are a component created from our biologic tendencies.  We discussed language in particular.  The fact that we have a innate genetic disposition to create some form of communicative ability creates the origin of the meme of language.  (Language not being the meme, the particular language spoken is the meme- such as Spanish/French etc.). Dr. Johnson then raised a very interesting topic- what if two words that are different have the same meaning?  (such as world and peace).  I started to think how this would affect our inclinations towards understanding the words themselves and also the greater concepts.  I encountered a conundrum, however, when I went back to the organic structure of the word.  If we are taught "world" to mean the exact same things as "peace", there would be no differentiating or subliminal association between the words. The words would simply mean the same exact thing.  What we associated with "peace" would be the exact object we would associate with "world"- and no special descriptions would contribute.