It's a little too easy in my mind to confuse Platos notion of the Good, from which the forms emanate from, of which one is the Beautiful, and the other is Justice; with other notions in ethics - ie Christian, or conventional everyday use that's it would be useful to have the Greek terms for these that Plato uses.
Also, does Plato use the term One as a synonym for the Good? And is his word for this the same as Parmenides?