Help is related to Association. Association is a type of Relation. Comparison is a type of Relation. 
Random is the opposite of Reason. Reason is related to Fault. Fault is a type of Crack. Crack is a synonym of Gap. 
Help <--RelatedTo--> Association --IsA--> Relation <--IsA-- Comparison 
Random <--Antonym--> Reason <--RelatedTo--> Fault --IsA--> Crack <--Synonym--> Gap 