Economist is derived from Economy. Economy is related to Business. Business is related to Law. Law is related to Practice. 
Carrier is related to Lift. Lift is the opposite of Drop. Drop is related to Glass. Glass is related to Half. 
Economist --DerivedFrom--> Economy <--RelatedTo--> Business <--RelatedTo--> Law <--RelatedTo--> Practice 
Carrier <--RelatedTo--> Lift <--Antonym--> Drop <--RelatedTo--> Glass <--RelatedTo--> Half 