Acute cholecystitis is inflammation (swelling) of the gallbladder.
More information on Acute Cholecystitis is available here.
Gallstones are small stones, usually made of cholesterol, that form in the gallbladder.
More information on Gallstone is available here.
Important: If you have these symptoms, they may be unrelated to any of these conditions listed. If you are concerned about your symptoms then you should see a doctor.