What is the difference between corn starch and wheat starch?

Rice is more paler and thinner, the seeds looking more oval (or oblong) in shape than corn. Corn kernels tend to be more yellow, and more squatter, with a parallelogram-look to them, if the kernel is flipped upside down, with the bottom part more curved and smoother. The plants themselves are different: corn is much taller, with wider leaves, and the cobs are located right on the side of the stems. Rice, on the other hand, has much narrower leaves, and the seeds are grown from the top of the plant, and have a pattern to them called a Raceme, where the seed head is kind of lacy, not cramped altogether like corn is.