Answer:
What is harder to catch the faster you run?
I can swim but never get wet. I can run but never get tired. I follow you everywhere but never say a word.
Kings and queens may cling to power and the jesters may have their call. I am the most common but I can rule them all. What am I?
I make billions of dollars selling windows. Who am I?
I am alive without breath and cold as death. I am never thirsty but always drinking.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.