Many, frequently and wide-spread words are what we call ‘all-purpose’ words.
Meaning that it has many definitions, depending on the person who is using it and even in what context this word is used.
This makes it virtually impossible to use it in conversations with multiple people.

If your definition is significantly different from mine, we can bicker and argue for a very long period of time, yet never really understand each other. 
As if we speak different languages!

Take for example the word: god and do a little experiment.
Random pick 10 people from the street and ask them to write down in just a few sentences what the word: god, means for them.
Now collect these descriptions and compare them.
OK, you may not have 10 completely different definitions, but at least 7 or 8, depending on the diversity of the persons who participated in this experiment.
Now imagine that these persons all take part of a forum discussion on the topic question: “Is god good or evil?”
You know what will happen right? Useless discussions over and over again as they appear on thousands of discussion fora around the world.
A huge waste of energy and  time, right?.

To avoid this, I have defined my own definitions, Utolantis definitions, to specify some all-purpose words like: god.
It does not mean that the Utolantis definition is the best definition possible.
It only means that, whenever this word is used, it is used in the context of the given definition.