Getting the "Lingo" Down

Now that I am ready to jump back into the dating pool with both feet, I find myself at a complete loss as to what the heck the difference is between:

1. Talking
2. Seeing
3. Dating
4. Relationship

Being completely honest, the last time I was in the dating scene I epically failed more times than I care to admit, so this time I am determined to get this right. But trying to nail a definitive answer down as to what all four of those words mean, is proving difficult.

Is "talking" just talking to someone, or could that be "seeing" too? Can you be "seeing" someone and not be sleeping with them? Once you pick someone that meets your standards and move things onto the physical level, does that mean your "dating" them or are you still just "seeing" them? And then when does it all fall into the "relationship" category?

I've asked a few friends of mine, both guys and girls, what it all means and not one single person could give either the same answer as the last or a firm one. It all seems to be based in opinion and that it is dependent on each couple.

So here's the question, if you master the lingo, does that mean you have mastered dating?