Studies link frequency of word use to how fast words evolve.
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Lieberman, E. et al. Nature 449 713-716 (2007).
Pagel, M. et al. Nature 449 717-720 (2007).
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THE INDO-EUROPEAN LANGUAGE FAMILY from the Indo-European Documentation Center
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Marris, E. How 'holp' became 'helped'. Nature (2007). https://doi.org/10.1038/news.2007.152