The studies collected in this volume explore the sociocultural, conceptual and structural dimensions of variation and change within pluricentric languages, with specific emphasis on the relationship between national varieties. The volume describes patterns of phonetic, lexical and morphosyntactic variation, and language attitudes. It brings together Cognitive Linguistics and sociolinguistics and makes use of advanced empirical methods. The volume addresses a wider audience of scholars including linguists, sociologists, anthropologists, and language planners and teachers.