Structure is a synonym of Construction. Construction is related to Board. Board is related to Written. 
Plate is related to Big. Big is related to Shade. Shade is the opposite of Sunlight. 
Structure <--Synonym--> Construction <--RelatedTo--> Board <--RelatedTo--> Written 
Plate <--RelatedTo--> Big <--RelatedTo--> Shade <--Antonym--> Sunlight 