A sprachbund (German: [ˈʃpʁaːxbʊnt], lit. "language federation"), also known as a linguistic area, area of linguistic convergence, diffusion area or language crossroads, is a group of languages that share areal features resulting from geographical proximity and language contact. The languages may be genetically unrelated, or only distantly related, but the sprachbund characteristics might give a false appearance of relatedness. A grouping of languages that share features can only be defined as a sprachbund if the features are shared for some reason other than the genetic history of the languages. Because of this, attempts to classify some language families without knowledge about the history of the languages can lead to misclassification as sprachbunds and similarly some sprachbunds are incorrectly classified as language families.
The numerical value of sprachbund in Chaldean Numerology is: 3
The numerical value of sprachbund in Pythagorean Numerology is: 7