Scooter (motorcycle)
The term scooter has several distinct meanings.
A motor scooter is like a motorcycle or moped in that it is a two-wheeled vehicles (or has a front wheel and a rear axle). It is typically smaller than a motorcycle, and has wheels between 8 and 14 inches in diameter, step-thru frames and engines that near the rear wheel or axle.
Manufacturers include
A children's or adult push scooter lacks a motor, and the the user generally stands on a platform with a vertical post that controls steering. A motorized variant of this, with the wheels along a single axle, is the Segway HT.