Frequency (phonem.) ; Metalinguistic awareness; Phonologische Bewusstheit; Phonological awareness; Focus on form (language teaching) ; Sprachbewusstsein; Linguistic awareness ; Schichtenspezifischer Sprachgebrauch; Kode (Soziolinguistik) ; Code (sociolinguistics) ; Phonetics (sociolinguistics) ; Sociophonetics ; Phonology (sociolinguistics) ; Sociophonology ; Language and sex; Gender studies; Metrosexuality; Language and gender ; Fronting (phon.) ; Apophonie; Apophony ; Monophthongization ; English (American) ; USA (English language in the) ; USA (engl. Sprache in den) ; English in the USA; Englisch in den USA; American English