How do voluntary and involuntary nerves differ?

Involuntary muscles are not under you conscious control they are responsible for essential activities such as breathing and digesting food. Voluntary muscles are under your conscious control smiling,...

the letters i and n are not added before voluntary muscles, whereas they are added before 'in'voluntary muscles.xD

A tract is a collection of nerve fibers (axons) in the central nervous system. A nerve is a collection of nerve fibers (axons) in the peripheral nervous system.

Voluntary means you will do something cooperatively, where involuntary means you are forced to do something against your will.

No, nerves are involuntary. If your nerves were voluntary, you could make yourself feel pain without even doing anything.