There are a number of 9mm's. 9x17 is .380, 9x18 is also called 9mm Makarov, 9x19 is also 9mm Luger. There's also 9mm Largo and there may be another that I can't think of right now.
“If ye love wealth better than liberty, the tranquility of servitude better than the animating contest of freedom, go home from us in peace. We ask not your counsels or arms. Crouch down and lick the hands which feed you. May your chains set lightly upon you, and may posterity forget that ye were our countrymen.” ― Samuel Adams