Gap is a synonym of Split. Split is a synonym of Separate. 
Age is related to Discrimination. Discrimination is the opposite of Favor. Favor is a type of Advantage. Advantage is related to Bonus. 
Gap <--Synonym--> Split <--Synonym--> Separate 
Age <--RelatedTo--> Discrimination <--Antonym--> Favor --IsA--> Advantage <--RelatedTo--> Bonus 