Semi-formal attire is considered less formal than formal attire, but more formal than casual attire. Cocktail attire, on the other hand, is a specific type of semi-formal attire that is typically worn to more formal events, such as evening weddings or black-tie events. 

The key difference between cocktail attire and semi-formal attire is that cocktail attire is typically more glamorous and flashy. It often includes dresses or skirts that are shorter than semi-formal attire, as well as brighter colors and …