I'm not sure. I just think that kinky usually has a more sexual connotation to it than freaky does. You would say that a series of events might be freaky, but not kinky necessarily :lol:
The way it was explained to me is, 'freaky' is when you don't go too far beyond a typical routine. By that, it is meant, you do the usual sexual things, but you might add some food, lotion, or use toys -- nothing too, too extreme. But 'kinky', that is when, you begin to heavily incorporate fetishes, perhaps whips and chains, water sports, and anything else of those natures. That isn't Webster or Oxford approved, but, it makes enough sense to me.
Kinky is something that you find mildly interesting, and you might try under the right set of circumstances. Freaky is something you wouldn't do. Lex