Your child can now understand that one object can be used for multiple uses and things. For example, if he is eating fruits in a bowl, he knows that the same bowl can also be used for storing goods in refrigerator or for serving snacks to guests.
What you need to know
His knowledge of understanding the multiple uses of a single object may not be as vast as yours, but he has got significant knowledge of a few of them. Keep questioning him about multiple things and their uses and also guide him how a particular object can be put to several uses efficiently.