Just What Is A Carbohydrate Anyway?
Unfortunately, you cannot just point to a food and label it a "carbohydrate" as each food is made up of protein, carbs and fats in varying degrees. Some foods are almost all carb, and some, like meat, eggs and fish have none.
To make matters even more complicated, there are simple carbohydrates and complex carbohydrates. For matters of nutrition, you should always pick the complex carbs which have a low glycemic index.