Answer:
Built of metal or wood to divide. It will make us good neighbors, if you stay on your side. What is it?
What is always coming every day, but never arrives until the next?
What time is spelled the same forwards and backwards?
What is something you will never see again?
They can be long or short; they can be grown or bought; they can be painted or left bare; they can be round or square.
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?