The Greater Hindu Kush designates a mountainous area extending from Afghanistan over Pakistan, Tajikistan and India to the westernmost parts of China. It is home to over 50 lan- guages from six different phyla; Indo-Aryan, Iranian, Nuristani, Turkic, Tibeto-Burman and the language isolate Burushaski. Due to its unique geographical setting, it is characterised by language contact and isolation, which lays the perfect ground for research on linguistic diversity, language convergence and genealogical relations. The present study relies on data from the entire region and attempts to identify structural similarities based on lexical items from core vocabulary, numerals and kinship terms. The study reexamines the genealogical affiliation through lexical similarity and investigates areal patterns of vergence, i.e. the branching out or mergence of these patterns. Results reconfirm the established classification of the languages and indicate a certain level of structural simi- larity across language families for some features such as numeral bases, numeral composition and the terms for ‘parents’ and ‘parents-in-law’, yet it also shows great diversity for other features such as ‘grandchildren’ and one’s siblings’ partner. / Language contact and relatedness in the Hindukush region (421-2014-631)