Answer:
I am shared by goats devils and unicorns.
I can be long or short. I can be grown or bought. I can be painted or left bare. My tip can be round or square. (one word)
I have roots nobody sees. I am taller than trees. Up, up I go but I never grow. What am I?
I go up when the rain comes down
I am perfect with a head perfect without a head; Perfect with a tail perfect without a tail; Perfect with either neither or both.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?