Blanket is a synonym of Sheet. Sheet is related to Expense. Expense is related to Financial. Financial is related to Money. 
Risky is related to Danger. Danger is related to Fatal. Fatal is related to Disease. Disease is the opposite of Healthy. 
Blanket <--Synonym--> Sheet <--RelatedTo--> Expense <--RelatedTo--> Financial <--RelatedTo--> Money 
Risky <--RelatedTo--> Danger <--RelatedTo--> Fatal <--RelatedTo--> Disease <--Antonym--> Healthy 