Base is part of Box. Base is etymologically related to Bar. Bar is related to Lawyer. Lawyer is related to Law. 
Keep is the opposite of Say. Say is a synonym of Pass. Pass is related to Driving. 
Box <--PartOf-- Base --EtymologicallyRelatedTo--> Bar <--RelatedTo--> Lawyer <--RelatedTo--> Law 
Keep <--Antonym--> Say <--Synonym--> Pass <--RelatedTo--> Driving 