What is the difference between a Non-Comissioned Officer (NCO) and a Commissioned Officer (CO) in the military rank structure?

Question

I’ve read several explanations but they all go over my head. I can’t seem to find an actually decent explanation as to what a “commission” is in a military setting.

In: 1343

Answer 1

I don’t understand why Army helicopter pilots are Warrant Officers and not regular officers, like in the Navy.