For better or worse, probably worse, the definitions of both "moped" and "scooter" vary from person to person or jurisdiction to jurisdiction. "Moped" is often used to describe a light motorcycle.
Ive been riding scooters and motorcycles for 20 years and I to this day I have no clear image of what a moped might be. I always imagined a theoretical spectrum from pure bicycle -> gas motor equipped bicycle-> moped -> pure motorcycle, but have never encountered a moped.
Scooter do not have pedals, mopeds do, hence the name.
The Piaggio Vespa is a scooter. The Piaggio Ciao is a moped.
No. Mopeds have pedals. That’s the “ped” part of motor pedal.
Language changes. I guarantee if you ask 100 people to draw a moped, maybe 2 will put pedals on it.