Surface is related to Tray. Tray is etymologically related to Tree. Tree is the opposite of Seed. Seed is related to Shell. 
Demand is a synonym of Insist. 
Surface <--RelatedTo--> Tray --EtymologicallyRelatedTo--> Tree <--Antonym--> Seed <--RelatedTo--> Shell 
Demand <--Synonym--> Insist 