When i nod my head left to right and up and down i hear a sound l hear a sound like bone rubbing . i can even hear it in my ear when i'm walking.

Neck making noises: It may be one of the many small joints connecting the vertebral bones in the neck. If it doesn't hurt, there is no need to worry. It is good to practice range of motion exercises with your neck to maintain good flexibility over your lifetime. It is a common place for people to develop arthritis, which limits how far you can turn your head.