Corn on the cob has a slightly crunchy texture on the outside and a tender one on the inside. Taste-wise, you get a sweet mouthful of a soft buttery flavor.
When popped, basically all popcorn is a tender bite of white fluff that doesn't have a lot of taste to it. However, you can enhance your snacking experience by putting butter, salt, spices, cheeses, caramel, and many other fun flavors over the bowl of popcorn. You can also alter the taste of the popcorn by the way you pop it: air pop vs. pan with oil vs. others.
Both field corn and flint corn are processed before made into something edible.