Cornmeal, maize meal, corn flour, maize flour - it's all a bit confusing figuring out what the difference is between them all. Really, there isn't much difference other than:
A) The coarseness of the ground grain.
B) Whether the husks and/or germ have been included or removed.
The grade of flour used in cooking can give different results in your cooking. Certain cornmeal/maize flour recipes call for a particular type of ground corn for best results.
Note that polenta is just another word for coarse yellow cornmeal.
