Ring can be used for Show. Ring is related to Signal. Retreat is a type of Signal. Retreat is a type of Withdrawal. 
Sugar is a type of Crystal. Crystal is a different concept from Glass. Glass is related to Substance. 
Show <--UsedFor-- Ring <--RelatedTo--> Signal <--IsA-- Retreat --IsA--> Withdrawal 
Sugar --IsA--> Crystal <--DistinctFrom--> Glass <--RelatedTo--> Substance 