 Furthermore, a few neuropsychological studies have described patients whose competence on geographical names was preserved while names of people were lost: one patient had preserved country names, though he had lost virtually every other linguistic ability (McKenna &amp; Warrington 1978; see Semenza 2006 for other cases of selective preservation of geographical names). Other behavioral experiments seem to show that country names are closer to common nouns than to other proper names such as people and landmark names in that the connectivity between the word and the conceptual system is likely to require diffuse multiple connections, as with common nouns (Hollis &amp; Valentine 2001). If these results were confirmed, it would turn out that the linguistic category of proper names is not homogeneous in terms of neural processing. Studies have also demonstrated that the retrieval of proper names from memory is typically a more difficult cognitive task than the retrieval of common nouns. For example, it is harder to name faces (of famous people) than to name objects; moreover, it is easier to remember a person’s occupation than her or his name. Interestingly, the same difference does not materialize in definition naming, i.e., in tasks where names and common nouns are to be retrieved from definitions (Hanley 2011). Though several hypotheses about the source of this difference have been proposed (see Brédart 2017 for a survey), no consensus has been reached on how to explain this phenomenon.