Language play and language acquisition.
D002648:Child; D002663:Child Language; D002675:Child, Preschool; D003142:Communication; D006801:Humans; D007100:Imitative Behavior; D007223:Infant; D007231:Infant, Newborn; D007804:Language Development; D008037:Linguistics; D010700:Phonetics; D010988:Play and Playthings; D012931:Social Environment