Which term describes a pouch or sac occurring in the lining wall of intestines?

The term "diverticulum" describes a pouch or sac occurring in the lining wall of intestines. Diverticula can occur in various parts of the intestines, including the colon (large intestine) or small intestines. They are often associated with conditions like diverticulitis or diverticular disease, where these pouches become inflamed or infected.