Most dishes fall under broader categories. "Bánh," for example, encompasses the many steamed rice cakes and rolls (like bánh cuốn and bánh bèo); not to be confused with the "bún" family, which always involves some rice vermicelli (whether with pork, as in bún chả, or the various noodle soups, such as bún rieu); "goi" is synonymous with salad, and in Vietnam they're typically made with non-lettuce things like unripe green papaya or mango.