Fail is a synonym of Failure. Failure is a synonym of Bankruptcy. Bankruptcy is a type of Solution. Solution is derived from Solve. 
Work is related to Do. Do is a synonym of Cause. 
Fail <--Synonym--> Failure <--Synonym--> Bankruptcy --IsA--> Solution --DerivedFrom--> Solve 
Work <--RelatedTo--> Do <--Synonym--> Cause 