In general, hobbyists fly model aircraft that are under 55 pounds for enjoyment and not for work, business, or compensation for hire. They fly solely within a visual line-of-sight and abide by all safety regulations. A hobbyist is not required to obtain a Part 107 Certification; however, they must register their aircraft with the FAA.
In general, commercial remote pilots are at least 16 years of age, have passed their Part 107 certification exam at an FAA-approved knowledge testing center, and been issued a Remote Pilot Certificate by the FAA. They seek to fly small unmanned aircraft systems for profit and must abide by regulations under CFR 14 Part 107.