Shock is a type of Collapse. Shock is related to Unhappy. 
Debt is the opposite of Profit. Profit is the opposite of Deficit. Deficit is a synonym of Shortage. 
Collapse <--IsA-- Shock <--RelatedTo--> Unhappy 
Debt <--Antonym--> Profit <--Antonym--> Deficit <--Synonym--> Shortage 