What's the difference between an argument and a parameter?

Question

When verbally talking about methods, I\'m never sure whether to use the word argument or parameter or something else. Either way the other people know what

Answer 1

Or may be its even simpler to remember like this, in case of optional arguments for a method:

public void Method(string parameter = "argument") 
{

}

parameter is the parameter, its value, "argument" is the argument :)