Answer:
It's like food but water kills it. What is it?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.
I can run but not walk. Wherever I go, thought follows close behind.
Reaching stiffly for the sky, I bare my fingers when its cold. In warmth I wear an emerald glove and in between I dress in gold.
We are five little objects of an everyday sort. You will find us all in a tennis court.
What covers its face with its hands, speaks no language, yet most known what it's saying?