Aggression is a type of Combat. Combat is a synonym of Conflict. Competition is a type of Conflict. 
Revelation is derived from Reveal. Reveal is related to Show. Show is related to Introduce. 
Aggression --IsA--> Combat <--Synonym--> Conflict <--IsA-- Competition 
Revelation --DerivedFrom--> Reveal <--RelatedTo--> Show <--RelatedTo--> Introduce 