Defend is a synonym of Fight. Fight is related to Anger. Anger is related to Burst. Blow is a type of Burst. 
Mall is related to Hill. Hill is related to Natural. Natural is a synonym of Legitimate. 
Defend <--Synonym--> Fight <--RelatedTo--> Anger <--RelatedTo--> Burst <--IsA-- Blow 
Mall <--RelatedTo--> Hill <--RelatedTo--> Natural <--Synonym--> Legitimate 