The present volume examines the usefulness of a particular set of concepts and processes of change studying their applicability to a range of linguistic changes in Spanish and Latin that cannot be easily or can only be partially accounted for within the framework of grammaticalization. Rather than challenging the insights of grammaticalization theory, the different contributions to this monograph demonstrate that exaptation, capitalization, refunctionalization and adfunctionalization, as well as changes motivated by rhetorical guidelines, constitute interesting and valuable notions that allow for a better understanding of specific language changes in Spanish and, by extension, of language change in general.