Discourse analysis (pragm.) ; Diskursgrammatik; Gesprächsanalyse; Konversationsgrammatik; Conversational analysis (pragm.) ; Unhöflichkeit; Impoliteness; Rudeness; Politeness (style of speech) ; Pragmatics, contrastive; Pragmatik, kontrastive; Contrastive pragmatics ; Discourse marker ; Phatic communication ; Implicature, conversational; Scalar implicature; Implicature, conventional; Conventional implicature; Conversational postulate ; Jugendliche (Sprachverhalten) ; Adolescents (language behavior) ; Jargon; Youth language ; English (American) ; USA (English language in the) ; USA (engl. Sprache in den) ; English in the USA; Englisch in den USA; American English ; Madrileño; Castilian