Execution is a type of Penalty. Penalty is a synonym of Discipline. 
Vegetable is a type of Grocery. Vegetable is the opposite of Fruit. Fruit can be used for Cooking. Cooking is related to Butter. 
Execution --IsA--> Penalty <--Synonym--> Discipline 
Grocery <--IsA-- Vegetable <--Antonym--> Fruit --UsedFor--> Cooking <--RelatedTo--> Butter 