Fair is related to Equality. Equality is a different concept from Difference. Difference is a synonym of Dispute. Dispute is a synonym of Contend. 
Contribute is a type of Promote. Promote is a synonym of Push. Push is related to Ring. 
Fair <--RelatedTo--> Equality <--DistinctFrom--> Difference <--Synonym--> Dispute <--Synonym--> Contend 
Contribute --IsA--> Promote <--Synonym--> Push <--RelatedTo--> Ring 