"diachrony"@en-us . "diachronic linguistics"@en-us . "106169050"^^ . "the study of linguistic change; \"the synchrony and diachrony of language\""@en-us . . "0"^^ . . . . . "06169050-n"^^ . "105798409"@en-us . . "historical linguistics"^^ . . . . . "0"^^ . . "104689664"@en-us . . . "historical linguistics"@en-us .