Debt is related to Tax. Tax is the opposite of Gift. Gift is related to Beg. Beg is related to Please. 
Old is related to Retirement. Retirement is derived from Retire. Retired is a form of Retire. 
Debt <--RelatedTo--> Tax <--Antonym--> Gift <--RelatedTo--> Beg <--RelatedTo--> Please 
Old <--RelatedTo--> Retirement --DerivedFrom--> Retire <--FormOf-- Retired 