Attractive is a synonym of Smart. Smart is a different concept from Fool. Ass is a type of Fool. Ass is a synonym of Crack. 
Money is the opposite of Coin. Coin is a different concept from Paper. Paper is related to Word. Word is related to Communication. 
Attractive <--Synonym--> Smart <--DistinctFrom--> Fool <--IsA-- Ass <--Synonym--> Crack 
Money <--Antonym--> Coin <--DistinctFrom--> Paper <--RelatedTo--> Word <--RelatedTo--> Communication 