The Difference Between Skill and Potentiality

I was going to ask about skill and also another agent of modality that you've written about potentialities. What's the difference between having the ability, say, to play tennis and having the skill versus having a mere potentiality to play tennis? Yeah. I think what I want to say is, my general picture, which may or may not hold up, is that the basic notions are option and ability. That's ability produced to options, then abilities are the core notion. And then notions like skill are certain kind of species of ability. So, as I think of as kind of knowledge guided ability, a certain sort.