Confusing verbs plus prepositions

Look at the pictures and read the sentences. Can you work out the difference?
 

Dream OF    and  dream  ABOUT

     

   Remind OF and remind ABOUT

Hear OF and hear ABOUT

Think OF and think ABOUT

Key:
dream about  = you dream at night
dream of= you have desires  ( sometimes dream about is also possible)

remind of= cause to remember
remind about= to tell somebody in order not to forget

hear about= hear about some news or what has happened
hear of = know

think of= opinion or this thought came quickly to your mind
think about= mental activity