Cake can be used for Cooking. Oven can be used for Cooking. 
Inspiration is a type of Product. Product is a synonym of Yield. Yield is a synonym of Income. Income is the opposite of Expense. 
Cake --UsedFor--> Cooking <--UsedFor-- Oven 
Inspiration --IsA--> Product <--Synonym--> Yield <--Synonym--> Income <--Antonym--> Expense 