Physically the difference is their comes the difference in the looks and likes of a person physical appearance changes with time like the shapes of hair and beard changes with time.
Language changes alot, you tend to speak allot during childhood. You prefer to speak good things when you grow up.
psychosocial: thinking of a child changes alot. one thinks alot for the areas which are good and which are bad, although one wants to enjoy each and everything but he/she thinks before doing anything. Everydecision is taken with the help of brain.
In adolescence, changes within the brain interact with experience, knowledge, and social demands and produce rapid cognitive growth.