What are the difference between central nervous system and autonomic nervous system?

What they control: The central nervous system refers to the brain and the spinal cord. The autonomic nervous system is a part of the peripheral nervous system that is involved in processes related to heart rate, sweating, blood pressure, and other processes that we don't think about, aka the name "autonomic". Autonomic nervous system disorders include fainting, fast heart rate, fatigue and sweating disorders.