Mass is a synonym of Lot. Lot is related to Property. Property is related to Own. 
Failure is a synonym of Grief. Grief is the opposite of Joy. Joy is related to Christmas. 
Mass <--Synonym--> Lot <--RelatedTo--> Property <--RelatedTo--> Own 
Failure <--Synonym--> Grief <--Antonym--> Joy <--RelatedTo--> Christmas 