Back is related to Side. Reverse is a type of Side. Reverse is related to Dog. Dog is a synonym of Click. 
Direct is related to Coordinator. Coordinator is derived from Coordinate. 
Back <--RelatedTo--> Side <--IsA-- Reverse <--RelatedTo--> Dog <--Synonym--> Click 
Direct <--RelatedTo--> Coordinator --DerivedFrom--> Coordinate 