Unique is similar to Specific. Specific is the opposite of General. General is related to Thing. Variable is a type of Thing. 
Corner is a type of Point. Advantage is a type of Point. Advantage is related to Bonus. 
Unique <--SimilarTo--> Specific <--Antonym--> General <--RelatedTo--> Thing <--IsA-- Variable 
Corner --IsA--> Point <--IsA-- Advantage <--RelatedTo--> Bonus 