There might be a clearer answer in AmE than in BrE, susanna - see Copyright's post 6.If a corn cob without the corn kernels is still a "corn cob" (which may very well be), what would be some ways to distinguish in writing between the two? "A discarded corn cob" could still have the kernels on. Other ideas?
The cob or corn cob doesn't have any corn at all on it, if that's what you mean.Thanks again! So I take it that "corn cob" (or "corncob") is only the corn on the cob after you have eaten the corn. And if it still has some of the corn on it when you use it as fodder, it's an "ear of corn."