Pass is a synonym of Crack. Crack is a synonym of Ass. Ass is a synonym of Tail. 
Treasure is a type of Possession. Possession is related to Keep. Keep is the opposite of Exchange. Exchange is related to Pass. 
Pass <--Synonym--> Crack <--Synonym--> Ass <--Synonym--> Tail 
Treasure --IsA--> Possession <--RelatedTo--> Keep <--Antonym--> Exchange <--RelatedTo--> Pass 