Combined is derived from Combination. Combination is related to Mixture. Mixture is related to Bread. Bread is related to Outside. 
Structure is a synonym of Makeup. you are likely to find Makeup in/at/on Theater. you are likely to find Curtain in/at/on Theater. 
Combined --DerivedFrom--> Combination <--RelatedTo--> Mixture <--RelatedTo--> Bread <--RelatedTo--> Outside 
Structure <--Synonym--> Makeup --AtLocation--> Theater <--AtLocation-- Curtain 