Sprachenzählung; Demography (linguistics) ; Language census ; Sprache und Denken; Erkenntnis und Sprache; Language and thought; Erkenntnistheorie; Epistemology and language; Language and epistemology ; Kulturvergleich; Language and culture ; Religion; Language and religion ; Sprachentod; Extinct language; Language endangerment; Bedrohte Sprache; Linguicide; Linguizid; Language death