Netzsprache; Netspeak ; Family communication ; Play (communication situation) ; Preverbal communication; Prespeech; Fötus (Sprachverständnis) ; Präverbale Kommunikation; Protolanguage (language acquisition) ; Prelexical period (language acquisition) ; Play (function in language acquisition) ; Baby talk; Motherese; Child-directed speech; Ammensprache; Babysprache; Infant-directed speech; Fatherese; Language spoken to children