Review is a type of Exercise. Review is a synonym of Reinforce. Reinforce is a synonym of Emphasize. 
Return is related to New. New is the opposite of Experienced. Experienced is a form of Experience. 
Exercise <--IsA-- Review <--Synonym--> Reinforce <--Synonym--> Emphasize 
Return <--RelatedTo--> New <--Antonym--> Experienced --FormOf--> Experience 