The linguist Laurence Horn has argued (2002) that the prefix un-really does attach to nouns, contrary to what we said in Section 3.3. He has collected such examples as undeath, uncountry, uncopier, unphilosophy, and unpublicity. Can you think of or find other examples where un- has attached to nouns? What do you think these un- nouns mean? (You can use a corpus or dictionary to help think of examples.)