The topic Language in Space regroups the traditional disciplines of dialectology and areal typology in a comparative perspective. Research in these areas encompasses the study of the spread of linguistic features across geographical areas of different scales. Within the URPP Language and Space, research of Language in Space is pursued within the Research Group Areal Morphology (at a global scale), and in the Research Group Systems of Nominal Determination in Contact (SyNoDe) (at the dialectal scale). The establishment of linguistic areas is based on the variety of linguistic features that enable a spatial distribution of speakers according to their speech patterns (dialects, accents, etc.) and, thus, identification and distinction.