The child develops concepts and is able to create and evaluate inferences, and thus able to understand metaphors etc.
The concept is what most AI approaches lack. Googles image search can identify apples, and cherries, and probably can categorize both as fruits, but it can't infer that this probably contains seeds, is a living being etc.
As I have an academic background in learning theory and developmental psychology, I'm pretty pessimistic about the current AI trend, autonomous driving etc. Most smart people in the field are chasing what are effectively more efficient regression functions for over 60 years now, and I almost never stumble upon approaches that have looked at what we know about actual human learning processes, development of the self etc.
Moravec's paradox[1] IMO should have been an inflection point for AI research. This is the level of problems AI research has to tackle if it ever wants to create AGI.