Mope is a small motorcycle
Moped, you mean?
Oh yes my bad. Moped has generally less stringent licensing requirement than motorcycles
Hmm I've never heard that before, interesting.
Moped is driven by both an engine and bicycle pedals
Oh really? I had no idea! 
 Common usage and in many jurisdictions the term "moped" is used for similar vehicles including a scooter.
So what are these used for compared to motorcycles?
They have  a motorcycle-like frame, including a backbone and a raised fuel tank, mounted directly between the saddle and the head tube.
Must be how they get it all into such a small package.