Feel is related to Impression. Edition is a type of Impression. Edition is a synonym of Version. Version is a synonym of Variation. 
Chief is related to Brave. Brave is the opposite of Weak. Weak is the opposite of Tough. Tough is related to Experienced. 
Feel <--RelatedTo--> Impression <--IsA-- Edition <--Synonym--> Version <--Synonym--> Variation 
Chief <--RelatedTo--> Brave <--Antonym--> Weak <--Antonym--> Tough <--RelatedTo--> Experienced 