Rank is a type of Protein. Ranch is etymologically related to Rank. Ranch is a different concept from Farm. 
Educator is a type of Professional. Professional is the opposite of Gentleman. Gentleman is the opposite of Player. Player is related to Box. 
Protein <--IsA-- Rank <--EtymologicallyRelatedTo-- Ranch <--DistinctFrom--> Farm 
Educator --IsA--> Professional <--Antonym--> Gentleman <--Antonym--> Player <--RelatedTo--> Box 