Dan,
definitions are all fine and dandy but they confuse people.
This is what you need to do.
1. Draw your image.
2. Scan it with a scanner
3. Your drawing is now saved on your computer but it is not a vector. It is still a normal bitmap image (a photo)
4. That bitmap image must now be loaded into a vector editor. Like Adobe Illustrator, Corel Draw or Inkscape (free software).
5. Inside Illustrator it's time to meet the Pen Tool. Trace your drawing. The result is a true vector image.
Sounds complicated and at least for a time, it is
Of course, you could simply scan your drawing and work on it (sell it) as you would with a normal photo. But that's not a vector.
Keep at it and it becomes easier, good luck