Answer:
Mouth up it gets filled, mouth down it gets empty.
Four kings of whom I am one lord. Often on deck but never on board. Though I have a large heart, I am always seen at war. During which I always wear a suit, but never a suit of armor. Who or what am I?
What has roots that nobody sees, and is taller than trees. Up, up it goes, and yet it never grows.
Take it and you will lose or gain more than all the others.
The main difference between us and zombies
It is something you will never see again.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?