My first half makes you grimace at first bite, my second shines bright in the dead of night. Together, I am an actor's favorite sight.

I am hoarded in panic, yet I vanish in haste, I stick by your side, in your darkest hour. I ease your toil when nature won’t wait, Then I let you leave in a fresher state.

I am the opposite of potential I measure energy in motion In art I make the still things sway My root is Greek, it means to move

I have everything yet, Feels so empty. I have so much light, Yet it is so dark.

I used to walk, but now I'm cured, So you won't have to chase me. I come from someplace smoky, And you just can't wait to taste me!