Additional is related to Interest. Interest is related to Debt. Debt is related to Status. 
Casualty is a synonym of Accident. Accident is related to Drop. Drop is a type of Drug. 
Additional <--RelatedTo--> Interest <--RelatedTo--> Debt <--RelatedTo--> Status 
Casualty <--Synonym--> Accident <--RelatedTo--> Drop --IsA--> Drug 