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A sprachbund (; , "federation of languages") – also known as a linguistic area, area of linguistic convergence, diffusion area or language crossroads – is a group of languages that have common features resulting from geographical proximity and language contact. They may be genetically unrelated, or only distantly related. Where genetic affiliations are unclear, the sprachbund characteristics might give a false appearance of relatedness. Areal features are common features of a group of languages in a sprachbund. ==History== In a 1904 paper, Jan Baudouin de Courtenay emphasised the need to distinguish between language similarities arising from a genetic relationship and those arising from convergence due to language contact. The term ''Sprachbund'', a calque of the Russian term ''языковой союз'' (''yazykovoy soyuz''; "language union"), was introduced by Nikolai Trubetzkoy in an article in 1923. In a paper presented to the 1st International Congress of Linguists in 1928, Trubetzkoy defined a sprachbund as a group of languages with similarities in syntax, morphological structure, cultural vocabulary and sound systems, but without systematic sound correspondences, shared basic morphology or shared basic vocabulary.〔 Later workers, starting with Trubetzkoy's colleague Roman Jakobson, have relaxed the requirement of similarities in all four of the areas stipulated by Trubetzkoy. In contrast, a sprachraum (from German, "language area"), also known as a dialect continuum, describes a group of genetically related dialects spoken across a geographical area, differing in their genetic relationship only slightly between areas that are geographically close, and gradually decreasing in mutual intelligibility as distances increase. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「sprachbund」の詳細全文を読む スポンサード リンク
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