Become is related to Transform. Transform is a synonym of Translate. Translate is a synonym of Understand. 
Later is the opposite of Previous. Previous is a synonym of Back. Quarterback is a type of Back. 
Become <--RelatedTo--> Transform <--Synonym--> Translate <--Synonym--> Understand 
Later <--Antonym--> Previous <--Synonym--> Back <--IsA-- Quarterback 