The lexical relationship between the co-view and video chat conditions was investigated by analysing the distribution of nouns, verbs, adjectives, and pronouns based on ranked word frequency in the Blocks A, Blocks B and Blicket tasks. ( Blocks A = unstructured block play; Blocks B = structured cooperative block play with a tower-building goal; Blicket = structured interaction where parents were instructed to teach infants a novel noun)