Question: how is the difference between corn and maize?
Answer: "Corn," in British English, used to refer to any small item, including a single grain or even a peppercorn. The word was a mass noun when it came to grains (two tons of corn), but a unit noun when it came to other items (peppercorns). "Maize" was the word first applied to Zea mays, a plant found in the New World.