Applied linguistics ; Second language acquisition (language teaching) ; Zweitspracherwerb (Unterricht) ; Foreign language teaching ; Membership categorization; Social representation; Category (ethnoling.) ; Multidisciplinary research ; Cross-cultural pragmatics; Pragmatics, cross-cultural; Pragmatik, interkulturelle; Intercultural communication ; Sociolinguistics ; Kulturvergleich; Language and culture ; Sociology of translation; Language and social studies ; English as international medium