Drug is a form of Drag. Drag is a type of Persuade. Convert is a type of Persuade. 
Century is related to Lot. Lot is a type of Divide. Divide is a synonym of Share. 
Drug --FormOf--> Drag --IsA--> Persuade <--IsA-- Convert 
Century <--RelatedTo--> Lot --IsA--> Divide <--Synonym--> Share 