Yes, for the most part, the ingredients are the same or similar, and the differences tend to come with the manner of cooking. Enchiladas and tacos are my favorites

. enchiladas are corn tortillas filled and rolled, placed in a pan with sauce (green sauce in my case), and also with cheese or sour cream, depending on the recipe/preference, and then baked in the oven. Tacos are filled then eaten, not cooked after being filled. Burritos are closer to enchiladas, but are made with larger flour tortillas and tucked under sort of like a diaper on the ends, and I find them to be somewhat doughy. Chimichangas are deep fried burritos. Tostadas are deep fried (usually thick and crispy) tortillas (they're actually sold that way, but you could buy or make regular thick tortillas and make your own) that are topped with things similar to what often goes in tacos, and eaten open faced. Flautas are another of my favorite, they're sometimes called taquitos, and are rolled tacos that are then fried before being served.