They both sound familiar and both correlate with the history I am familiar with in some ways, yet they're still radically different.

Gears are lifeforms that have either been genetically altered or created to be infused with Magic, a limitless power source, and ultimately turning them into bioweapons capable of mass destruction. Most have been destroyed with very few exceptions.

I see. If you need any assistance with that goal, I will gladly help.