Well starch isn't a type of food it's just what is contained in the food you eat.
So spaghetti squash is a vegetable but it does contain starch so spaghetti squash is a starchy vegetable and starchy vegetables such as spaghetti squash contain quite a bit of calories although it's still very healthy for you.
Other starchy vegetables are things like leafy greens, cauliflower and bell peppers.