Snack chips are a popular snack food that come in many different varieties. Doritos is a brand of snack chips made by Frito-Lay, and they are triangular in shape and come in a variety of flavors. Nachos are a type of snack chip made from tortilla chips and usually topped with melted cheese, jalapenos, and other toppings. Both Doritos and Nachos are popular snacks that can be found in most grocery stores.