Bull is the opposite of Bear. Bear is a synonym of Wear. Wear is related to Sock. 
Ceo is related to Business. Business is related to Economics. Economics is related to Trade. Trade is related to Agreement. 
Bull <--Antonym--> Bear <--Synonym--> Wear <--RelatedTo--> Sock 
Ceo <--RelatedTo--> Business <--RelatedTo--> Economics <--RelatedTo--> Trade <--RelatedTo--> Agreement 