Answer:
What breaks in the water but never on land?
Built of metal or wood to divide. It will make us good neighbors, if you stay on your side. What is it?
There's one in every deck of cards and in a famous movie
What can you keep after giving it to someone?
The day is their night and the night is their day, when I shout and they shout back I run away.
People take me on walks and I run and have fun. What am I?