Competition is related to Opponent. Opponent is the opposite of Friend. Afraid is etymologically related to Friend. Afraid is a synonym of Scared. 
Core is a type of Bar. Bar is related to Gather. Gather is a synonym of Acquire. 
Competition <--RelatedTo--> Opponent <--Antonym--> Friend <--EtymologicallyRelatedTo-- Afraid <--Synonym--> Scared 
Core --IsA--> Bar <--RelatedTo--> Gather <--Synonym--> Acquire 