Good answer below. The "9mm Luger" is properly the 9mm Parabellum, but it is also called the Luger. There are about a dozen different cartridges with 9mm in their name, but the 9mm Luger is the best known.
9mm Short is another term for the .380 ACP cartridge.
Yes. .380 ACP is ONE of the full names for the cartridge- stands for Automatic Colt Pistol. You may also see it as 9mm Kurz, or 9mm Corto (means 9mm Short),
380 ACP or 9mm short or 9mm corto
They are the same round. In the "metric world" outside the US it's called 9mm Kurz (German for "short") and in the US it's called the .380 ACP. Other names, depending on the country and manufacturer, include .380 Auto, 9mm Browning, 9mm Corto, 9mm Short and 9x17mm, and there are even some others. The confusion is caused by the fact that US ammo named .38 or .380 is the diameter of the brass cartridge while the bullet is actually .35" (9mm) diameter.
.380 ACP is simply another name for the 9x17 cartridge, also known as the 9mm Short or 9mm Kurz.
9mm and .380 bullets are the same diameter. In fact, .380 is also called 9mm Kurz(short) or 9x17. However, the caliber commonly called 9mm is 9x19, which means the cases are different size. A .380 cartridge will fall down into the chamber and the firing pin will not reach the primer. So, a .380 bullet can be fired from a 9mm gun if it were loaded into a 9mm case. A .380 cartridge would fail to fire in a 9mm gun.
The 380 is a short 9mm, same bore diameter .355 but is a less powerful round.The two are not interchangable,
the 380 is a 9mm short
The .380 ACP is a type of 9mm... 9x17, and is sometime referred to as the 9mm Short or 9mm Kurz. It is NOT the same as the 9mm Luger/Parabellum (9x19), and it is NOT compatible with any other type of 9mm cartridge (such as the 9x19 Luger/Parabellum, 9x18 Makarov, 9x21, 9x23, 9x25, etc.).
.380 ACP, also known as 9x17mm, 9mm Short, and 9mm Kurz.
Assuming you're referring to the 9x19mm (also known as the 9mm Parabellum or 9mm Luger) and the .380 ACP (also known as the 9x17mm, 9mm Short, and 9mm Kurz), the answer is no on both counts, and it would be extremely dangerous to try this.