What's the difference between white corn and yellow corn?

The two main varieties of corn are yellow and white. Yellow corn has larger, fuller-flavored kernels. White corn kernels are smaller and sweeter. "Butter and Sugar" corn is a hybrid of both yellow and white corn and has kernels of both colors.

Hope this helps :)

White Corn Vs Yellow Corn

Corn in the United States, to maize, or Indian corn, of which there are several kinds; as, yellow corn, which grows chiefly in the Northern States, and is yellow when ripe; white or southern corn, which grows to a great height, and has long white kernels; sweet corn, comprising a number of sweet and tender varieties, grown chiefly at the North, some of which have kernels that wrinkle when ripe and dry; pop corn, any small variety, used for popping.

http://dictionary.die.net/yellow%20corn