"Nós comemos milho."

Translation: We eat corn.

[bemljj]

does anyone know when it is maize, and when it is corn?

[Paulenrique]

You can use both... corn also means cereal..

[G.P.Niers]

I think maize should also be acceptable in this case, but I'm not a native English speaker, so I'm not quite 100% sure.

[Paulenrique]

Yup... it depends on the region... http://www.ochef.com/answers/1631.htm

[fqsama]

I wrote maize and it was marked wrong for some reason

[DuolingoQueen96]

me too