Casualty is a synonym of Accident. Accident is related to Crash. Crash is a type of Magazine. Dessert is a type of Magazine. 
Sugar is related to Candy. Candy is related to Chocolate. Chocolate is related to Bitter. 
Casualty <--Synonym--> Accident <--RelatedTo--> Crash --IsA--> Magazine <--IsA-- Dessert 
Sugar <--RelatedTo--> Candy <--RelatedTo--> Chocolate <--RelatedTo--> Bitter 