Set is related to Limit. Limited is a form of Limit. Limited is the opposite of Absolute. 
Spoon is related to Metal. Metal is related to Cage. Cage is related to Trap. 
Set <--RelatedTo--> Limit <--FormOf-- Limited <--Antonym--> Absolute 
Spoon <--RelatedTo--> Metal <--RelatedTo--> Cage <--RelatedTo--> Trap 