Sprachnationalismus; Nationalism (linguistic) ; Nationalismus (sprachlicher) ; Language and nationality ; Marxism-Leninism (language politics) ; History of language (sociolinguistics) ; Language planning; Purification of language; Sprachpurismus; Sprachverfall; Language decay; Language cultivation ; Hochsprache; Schriftsprache; Acrolect; Standard language ; Bokmål; Nynorsk; Norwegian