Core is related to Essence. Essence is a type of Substance. Substance is related to Sauce. Sauce is part of Pizza. 
Hell is a synonym of Spirit. Courage is a type of Spirit. Heart is a type of Courage. Heart is a synonym of Interior. 
Core <--RelatedTo--> Essence --IsA--> Substance <--RelatedTo--> Sauce --PartOf--> Pizza 
Hell <--Synonym--> Spirit <--IsA-- Courage <--IsA-- Heart <--Synonym--> Interior 