What's the difference, if any, between a "sprocket" and a "cog"?

Question

I understand both of these to be teeth on a gear. Am I mistaken? Please enlighten me.

Answer 1

A sprocket engages with a chain or a track. A cog engages with the cogs of another gear.

Answer 2

A sprocket is a wheel with metal teeth that meshes with a chain, track or other perforated material. It is distinguished from a gear in that sprockets are never meshed together directly.
Sprockets are used in bicycles, motorcycles, and other machinery either to transmit rotary motion between two shafts where gears are unsuitable or to impart linear motion to a track, tape etc., and their applications are usually in low horsepower drives.

Gears and "cogs" are used in drives that require that the rotating drive parts mesh together.
A rotating gear meshing with a fixed linear rack gear is usually referred to as a "cog", as in a "cog" railway drive.

Answer 3

i seriouslt don't think there is a difference..except the name

and one is produced by Jeorge Jetson