Legitimate is the opposite of Sharp. Sharp is a synonym of Elegant. Elegant is related to Royal. Royal is related to Roll. 
Reverse is a different concept from Drive. Drive is related to Turn. Bottom is a type of Turn. Bottom is a synonym of Depth. 
Legitimate <--Antonym--> Sharp <--Synonym--> Elegant <--RelatedTo--> Royal <--RelatedTo--> Roll 
Reverse <--DistinctFrom--> Drive <--RelatedTo--> Turn <--IsA-- Bottom <--Synonym--> Depth 