Same thing. Yes.
.380 ACP means .380 Caliber, Automatic Colt Pistol. Often shortened to 380 auto. In other parts of the world, the 380 ACP is called a "9mm short" (or Kurtz, Corto other languages for "short."). So yes.
.380 ACP is a specific type of ammunition made. 380 LCP is the name of a Pistol, made by Ruger which fires the .380 ACP round.
Same round, different name
.380 ACP, and nothing else. Right now, there's something of a shortage on .380 ammo, and it's not the easiest to find at the moment.
Yup.
No. 32 ACP vs. 380 ACP
.45 ACP means Automatic Colt Pistol. It IS .45 Auto.
The 45 GAP operates at slightly higher pressure than standard (non +p) 45 ACP ammunition and by this means is able to generate similar velocity and energy to the 45 ACP cartridge. The 380 Auto cartridge is not only smaller than 9mm Luger, it is also far lower pressure. The 380 Auto delivers far less velocity and energy and cannot handle as much bullet mass as the 9mm.
the ACP in any gun cartridge means Colt Auto Pistol
Yes
Yes. 9mm Kurz (or Cortos) is the European designation for .380 ACP. also called .380 Auto.
If it's marked 38 ACP it takes an old cartridge that is generally no longer available. If it's marked 380 ACP the cartridge is available at any gunshop as the 380 Auto. The ACP stands for Automatic Colt Pistol. The 380 cartridge is a 9MM short.