Tax is related to Expense. Expense is a synonym of Payment. Payment is related to Require. 
Cut is related to Wound. Wound is related to Pain. Pain is related to Illness. 
Tax <--RelatedTo--> Expense <--Synonym--> Payment <--RelatedTo--> Require 
Cut <--RelatedTo--> Wound <--RelatedTo--> Pain <--RelatedTo--> Illness 