Prohibit is a synonym of Ban. Ban is a type of Forbid. Forbid is a type of Command. 
Introduce is related to Exchange. Exchange is related to Interaction. Interaction is related to Trade. 
Prohibit <--Synonym--> Ban --IsA--> Forbid --IsA--> Command 
Introduce <--RelatedTo--> Exchange <--RelatedTo--> Interaction <--RelatedTo--> Trade 